Copyright and License notice added to all files

setup.py

@@ -1,4 +1,21 @@
 #!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+# Photobooth - a flexible photo booth software
+# Copyright (C) 2018  Balthasar Reuter <photobooth at re - web dot eu>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero 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 Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
 
 """A setuptools based setup module for the photobooth.