diff --git a/.example.env b/.example.env
index b269958..20989a3 100644
--- a/.example.env
+++ b/.example.env
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/.gitignore b/.gitignore
index 4c49bd7..d826dd0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,17 @@
+# Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
+# Copyright (C) 2022  Dominic Grimm
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
 .env
diff --git a/Makefile b/Makefile
index 57f57f2..c5c4a0a 100644
--- a/Makefile
+++ b/Makefile
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/config/nginx/nginx.conf b/config/nginx/nginx.conf
index e7dc28d..4a210e7 100644
--- a/config/nginx/nginx.conf
+++ b/config/nginx/nginx.conf
@@ -1,17 +1,19 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
 events {
 }
 
diff --git a/docker-compose.yml b/docker-compose.yml
index d4a319b..26b13a5 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docker/backend/.dockerignore b/docker/backend/.dockerignore
index 3bdd927..e9de3a3 100644
--- a/docker/backend/.dockerignore
+++ b/docker/backend/.dockerignore
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docker/backend/.editorconfig b/docker/backend/.editorconfig
index a31eb2b..a11d716 100644
--- a/docker/backend/.editorconfig
+++ b/docker/backend/.editorconfig
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docker/backend/.gitignore b/docker/backend/.gitignore
index 0599719..3136e08 100644
--- a/docker/backend/.gitignore
+++ b/docker/backend/.gitignore
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docker/backend/Dockerfile b/docker/backend/Dockerfile
index a8b68b1..97d60f0 100644
--- a/docker/backend/Dockerfile
+++ b/docker/backend/Dockerfile
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docker/backend/Makefile b/docker/backend/Makefile
index 778a9ea..1b0388a 100644
--- a/docker/backend/Makefile
+++ b/docker/backend/Makefile
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docker/backend/shard.yml b/docker/backend/shard.yml
index 1ea4a3f..ddc93b4 100644
--- a/docker/backend/shard.yml
+++ b/docker/backend/shard.yml
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docker/backend/src/backend.cr b/docker/backend/src/backend.cr
index 9efb84a..1a39e68 100644
--- a/docker/backend/src/backend.cr
+++ b/docker/backend/src/backend.cr
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docker/backend/src/backend/api.cr b/docker/backend/src/backend/api.cr
index de67362..dec813a 100644
--- a/docker/backend/src/backend/api.cr
+++ b/docker/backend/src/backend/api.cr
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docker/backend/src/backend/api/auth.cr b/docker/backend/src/backend/api/auth.cr
index 38f676a..36e0ba8 100644
--- a/docker/backend/src/backend/api/auth.cr
+++ b/docker/backend/src/backend/api/auth.cr
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docker/backend/src/backend/api/context.cr b/docker/backend/src/backend/api/context.cr
index 6061f39..d72797c 100644
--- a/docker/backend/src/backend/api/context.cr
+++ b/docker/backend/src/backend/api/context.cr
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docker/backend/src/backend/api/log.cr b/docker/backend/src/backend/api/log.cr
index f10ac2b..dfabf99 100644
--- a/docker/backend/src/backend/api/log.cr
+++ b/docker/backend/src/backend/api/log.cr
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docker/backend/src/backend/api/macros/minify_html.cr b/docker/backend/src/backend/api/macros/minify_html.cr
index 06f7423..a73ad14 100644
--- a/docker/backend/src/backend/api/macros/minify_html.cr
+++ b/docker/backend/src/backend/api/macros/minify_html.cr
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docker/backend/src/backend/api/schema.cr b/docker/backend/src/backend/api/schema.cr
index b1d6173..95b41b0 100644
--- a/docker/backend/src/backend/api/schema.cr
+++ b/docker/backend/src/backend/api/schema.cr
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docker/backend/src/backend/api/schema/helpers.cr b/docker/backend/src/backend/api/schema/helpers.cr
index deaff3e..c611bdf 100644
--- a/docker/backend/src/backend/api/schema/helpers.cr
+++ b/docker/backend/src/backend/api/schema/helpers.cr
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docker/backend/src/backend/api/schema/mutation.cr b/docker/backend/src/backend/api/schema/mutation.cr
index ea1c8ac..fcd75a5 100644
--- a/docker/backend/src/backend/api/schema/mutation.cr
+++ b/docker/backend/src/backend/api/schema/mutation.cr
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docker/backend/src/backend/api/schema/query.cr b/docker/backend/src/backend/api/schema/query.cr
index e3cf991..a0de467 100644
--- a/docker/backend/src/backend/api/schema/query.cr
+++ b/docker/backend/src/backend/api/schema/query.cr
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docker/backend/src/backend/api/schema/student.cr b/docker/backend/src/backend/api/schema/student.cr
index 4f803b3..bfce6eb 100644
--- a/docker/backend/src/backend/api/schema/student.cr
+++ b/docker/backend/src/backend/api/schema/student.cr
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docker/backend/src/backend/api/schema/teacher.cr b/docker/backend/src/backend/api/schema/teacher.cr
index 47e27ca..6368a5f 100644
--- a/docker/backend/src/backend/api/schema/teacher.cr
+++ b/docker/backend/src/backend/api/schema/teacher.cr
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docker/backend/src/backend/api/schema/teacher_vote.cr b/docker/backend/src/backend/api/schema/teacher_vote.cr
index e053119..2d29b4d 100644
--- a/docker/backend/src/backend/api/schema/teacher_vote.cr
+++ b/docker/backend/src/backend/api/schema/teacher_vote.cr
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docker/backend/src/backend/api/schema/user.cr b/docker/backend/src/backend/api/schema/user.cr
index 7920b44..257d257 100644
--- a/docker/backend/src/backend/api/schema/user.cr
+++ b/docker/backend/src/backend/api/schema/user.cr
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docker/backend/src/backend/api/schema/user_role.cr b/docker/backend/src/backend/api/schema/user_role.cr
index 43e0bd3..af1f39a 100644
--- a/docker/backend/src/backend/api/schema/user_role.cr
+++ b/docker/backend/src/backend/api/schema/user_role.cr
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docker/backend/src/backend/api/schema/vote.cr b/docker/backend/src/backend/api/schema/vote.cr
index 82978d8..af627e9 100644
--- a/docker/backend/src/backend/api/schema/vote.cr
+++ b/docker/backend/src/backend/api/schema/vote.cr
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docker/backend/src/backend/api/service.cr b/docker/backend/src/backend/api/service.cr
index f7c1706..10f5ce5 100644
--- a/docker/backend/src/backend/api/service.cr
+++ b/docker/backend/src/backend/api/service.cr
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docker/backend/src/backend/api/webserver.cr b/docker/backend/src/backend/api/webserver.cr
index 66f1f9d..810d577 100644
--- a/docker/backend/src/backend/api/webserver.cr
+++ b/docker/backend/src/backend/api/webserver.cr
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docker/backend/src/backend/authors.cr b/docker/backend/src/backend/authors.cr
index c9865e0..335a31e 100644
--- a/docker/backend/src/backend/authors.cr
+++ b/docker/backend/src/backend/authors.cr
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docker/backend/src/backend/config.cr b/docker/backend/src/backend/config.cr
index f03fbd1..ebc98e3 100644
--- a/docker/backend/src/backend/config.cr
+++ b/docker/backend/src/backend/config.cr
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docker/backend/src/backend/db.cr b/docker/backend/src/backend/db.cr
index 532a9d9..86192bf 100644
--- a/docker/backend/src/backend/db.cr
+++ b/docker/backend/src/backend/db.cr
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docker/backend/src/backend/db/micrate_db_version.cr b/docker/backend/src/backend/db/micrate_db_version.cr
index c5183b3..f319075 100644
--- a/docker/backend/src/backend/db/micrate_db_version.cr
+++ b/docker/backend/src/backend/db/micrate_db_version.cr
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docker/backend/src/backend/db/student.cr b/docker/backend/src/backend/db/student.cr
index ced012b..64ad955 100644
--- a/docker/backend/src/backend/db/student.cr
+++ b/docker/backend/src/backend/db/student.cr
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docker/backend/src/backend/db/teacher.cr b/docker/backend/src/backend/db/teacher.cr
index 29bcfee..4eed0d5 100644
--- a/docker/backend/src/backend/db/teacher.cr
+++ b/docker/backend/src/backend/db/teacher.cr
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docker/backend/src/backend/db/teacher_vote.cr b/docker/backend/src/backend/db/teacher_vote.cr
index d8ed77f..d0d9c3c 100644
--- a/docker/backend/src/backend/db/teacher_vote.cr
+++ b/docker/backend/src/backend/db/teacher_vote.cr
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docker/backend/src/backend/db/user.cr b/docker/backend/src/backend/db/user.cr
index a09e679..0df968a 100644
--- a/docker/backend/src/backend/db/user.cr
+++ b/docker/backend/src/backend/db/user.cr
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docker/backend/src/backend/db/user_role.cr b/docker/backend/src/backend/db/user_role.cr
index 3ccb191..b26f124 100644
--- a/docker/backend/src/backend/db/user_role.cr
+++ b/docker/backend/src/backend/db/user_role.cr
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docker/backend/src/backend/db/vote.cr b/docker/backend/src/backend/db/vote.cr
index 258f8c9..6808ad8 100644
--- a/docker/backend/src/backend/db/vote.cr
+++ b/docker/backend/src/backend/db/vote.cr
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docker/backend/src/backend/ldap.cr b/docker/backend/src/backend/ldap.cr
index d3bfb5a..18497ab 100644
--- a/docker/backend/src/backend/ldap.cr
+++ b/docker/backend/src/backend/ldap.cr
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docker/backend/src/backend/ldap/constructor.cr b/docker/backend/src/backend/ldap/constructor.cr
index 0c0010b..1b18d27 100644
--- a/docker/backend/src/backend/ldap/constructor.cr
+++ b/docker/backend/src/backend/ldap/constructor.cr
@@ -1,3 +1,19 @@
+# Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
+# Copyright (C) 2022  Dominic Grimm
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
 module Backend
   module Ldap
     # DN construction utilities
diff --git a/docker/backend/src/backend/ldap/user.cr b/docker/backend/src/backend/ldap/user.cr
index 6a561c1..4989490 100644
--- a/docker/backend/src/backend/ldap/user.cr
+++ b/docker/backend/src/backend/ldap/user.cr
@@ -1,3 +1,19 @@
+# Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
+# Copyright (C) 2022  Dominic Grimm
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
 require "json"
 
 module Backend
diff --git a/docker/backend/src/backend/license.cr b/docker/backend/src/backend/license.cr
index 7f795e0..109bd84 100644
--- a/docker/backend/src/backend/license.cr
+++ b/docker/backend/src/backend/license.cr
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docker/backend/src/backend/log.cr b/docker/backend/src/backend/log.cr
index ee8d1fc..e2bbd6e 100644
--- a/docker/backend/src/backend/log.cr
+++ b/docker/backend/src/backend/log.cr
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docker/backend/src/backend/mailers.cr b/docker/backend/src/backend/mailers.cr
index 2c8c901..ec78f53 100644
--- a/docker/backend/src/backend/mailers.cr
+++ b/docker/backend/src/backend/mailers.cr
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docker/backend/src/backend/mailers/teacher_registration_mailer.cr b/docker/backend/src/backend/mailers/teacher_registration_mailer.cr
index a5ba59c..3cf46b8 100644
--- a/docker/backend/src/backend/mailers/teacher_registration_mailer.cr
+++ b/docker/backend/src/backend/mailers/teacher_registration_mailer.cr
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docker/backend/src/backend/redis.cr b/docker/backend/src/backend/redis.cr
index d5c9e02..7b2996b 100644
--- a/docker/backend/src/backend/redis.cr
+++ b/docker/backend/src/backend/redis.cr
@@ -1,3 +1,19 @@
+# Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
+# Copyright (C) 2022  Dominic Grimm
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
 require "redis"
 
 module Backend
diff --git a/docker/backend/src/backend/runner.cr b/docker/backend/src/backend/runner.cr
index 02ba33c..9eaf0c1 100644
--- a/docker/backend/src/backend/runner.cr
+++ b/docker/backend/src/backend/runner.cr
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docker/backend/src/backend/version.cr b/docker/backend/src/backend/version.cr
index 558fec8..f88adf2 100644
--- a/docker/backend/src/backend/version.cr
+++ b/docker/backend/src/backend/version.cr
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docker/backend/src/backend/worker.cr b/docker/backend/src/backend/worker.cr
index f193c79..efa9bbc 100644
--- a/docker/backend/src/backend/worker.cr
+++ b/docker/backend/src/backend/worker.cr
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docker/backend/src/backend/worker/jobs.cr b/docker/backend/src/backend/worker/jobs.cr
index 888e7b7..c9ebbed 100644
--- a/docker/backend/src/backend/worker/jobs.cr
+++ b/docker/backend/src/backend/worker/jobs.cr
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docker/backend/src/backend/worker/jobs/send_teachers_registration_email_job.cr b/docker/backend/src/backend/worker/jobs/send_teachers_registration_email_job.cr
index 296ed5b..0ca9548 100644
--- a/docker/backend/src/backend/worker/jobs/send_teachers_registration_email_job.cr
+++ b/docker/backend/src/backend/worker/jobs/send_teachers_registration_email_job.cr
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docker/backend/src/backend/worker/log.cr b/docker/backend/src/backend/worker/log.cr
index 5687877..af27b22 100644
--- a/docker/backend/src/backend/worker/log.cr
+++ b/docker/backend/src/backend/worker/log.cr
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docker/backend/src/backend/worker/service.cr b/docker/backend/src/backend/worker/service.cr
index 1229aef..ee13e55 100644
--- a/docker/backend/src/backend/worker/service.cr
+++ b/docker/backend/src/backend/worker/service.cr
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docker/backend/src/cli/backend.cr b/docker/backend/src/cli/backend.cr
index da9cc79..62e94b0 100644
--- a/docker/backend/src/cli/backend.cr
+++ b/docker/backend/src/cli/backend.cr
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docker/backend/src/cli/micrate.cr b/docker/backend/src/cli/micrate.cr
index 8505530..041d287 100644
--- a/docker/backend/src/cli/micrate.cr
+++ b/docker/backend/src/cli/micrate.cr
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docs/.gitignore b/docs/.gitignore
index 7c4f5e5..dd3687d 100644
--- a/docs/.gitignore
+++ b/docs/.gitignore
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/docs/book.toml b/docs/book.toml
index bd72551..467ae0c 100644
--- a/docs/book.toml
+++ b/docs/book.toml
@@ -1,16 +1,16 @@
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/scripts/backend.sh b/scripts/backend.sh
index 5217e48..b89a048 100644
--- a/scripts/backend.sh
+++ b/scripts/backend.sh
@@ -2,17 +2,17 @@
 
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
diff --git a/scripts/micrate.sh b/scripts/micrate.sh
index e442e1c..f958f6b 100644
--- a/scripts/micrate.sh
+++ b/scripts/micrate.sh
@@ -2,17 +2,17 @@
 
 # Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
 # Copyright (C) 2022  Dominic Grimm
-
+#
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
-
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-
+#
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.