GitLab

Enable configuration options to be passed through to certain (later possibly all) templates directly

Template jwinf: Optionally require field sex in profile, optionally allow 'no answer', 'diverse' or 'other', respectively, configurable via config file

Make admin interface select participations by session id instead of session token. This allows to show participations of users, that have logged out.

Add link to issue tracker and version number in footer (currently for logged in users only). Fixes #111 and #112

Ask users on OAuth login to fill in their user data (especially grade). Fixes #96. Also some formatting