Fix some layout issues.

Keep the headers from scrolling with the content.
Merge branch 'feature/slush' of https://github.com/wallcreeper/ch.bfh.bti7054.w2014.q.uTag into feature/slush

Conflicts:
	angular/src/app/things/things.html
Move controllers from main-controller to its belonging scope
fix some merge conflicts
Merge branch 'feature/slush' into feature/backend

Because reasons