GitLab

- Added a login welcome page that acts as the LOGIN_URL
- All logins are carried out via a login wrapper
- Translation changes

Created a login-required - like decorator to indicate that the user should
be social active in order to view protected views. Added the decorator in any
place that the login_required exists.

Added a boolean field in user profile to overcome django-social-auth
restrictions regarding the auth and login proccess while a user was inactive.
Updated the corresponding activation view plus created a migration.

Added Shibboleth attribute map. Added management dropdown in seperate template. Added accounts in urls.py.dist