Updated gemfile.
Changed bootstrap version for compatibility.
Increase lectures per page

Currently you have to click too much, to find new courses.
Change background image.
Changed email address for support and help.
Merge pull request #112 from Mic92/patch-1

Increase lectures per page
Change email address to new support email address.
Change 'new semester' button to use course data.
Update savon to v2.2.0.
Bugfixes in courses.
Fix clone method for courses.
Bugfix for searching.
Bugfix for searching.
Merge branch 'master' of github.com:auditorium/auditorium
Bugfix results for search when user is deleted.
Add new lecture button on chair.
Changed class to link for a new lecture button.
Add readme
Update readme file.
Changed further information text.