possibility for an admin to configure administration mail address
Merge branch 'develop-ak' of github.com:tkowark/hpi-hiwi-portal into develop-ak
#263 Staff Edit Fix
#260 done student edit/profile enhancements except for the hover effect
tests + refactoring of configuration stuff
Merge branch 'develop' into develop-js

Conflicts:
	app/views/staff/_form.html.erb
	config/locales/views/students/en.yml
fixed issue with nil-class after logging in for the first time
#260 hover effect and caret
Merge branch 'develop-js' of github.com:tkowark/hpi-hiwi-portal into develop-js
#283
- the navbar is blank, if a user is not signed in
- log out -> Log Out
#260 - language selection is now always available
#283 - navbar::admin
capitalized star description
Merge branch 'develop-js' of github.com:tkowark/hpi-hiwi-portal into develop-js
Merge branch 'develop-ak' of github.com:tkowark/hpi-hiwi-portal into develop-ak
Merge branch 'develop' into develop-js

Conflicts:
	app/views/layouts/application.html.erb
	app/views/students/_form.html.erb
some acceptance tests
fixed merge conflicts
julias proposal for picture placement, made grey darker #290
cleaned up some tests