Lizenz und Readme hinzugefügt

templates/participant.html

@@ -1,3 +1,14 @@
+<!--
+  -- Sicherheitsunterweisung
+  -- Copyright (C) 2023  Jason Streifling
+  --
+  -- 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 <http://www.gnu.org/licenses/>.
+  -->
+
 {{define "content"}}
 <form>
   <label for="first-{{.Login}}">Vorname</label>