Implemented xib for MensaSectionHeaderView
Merge branch 'Mensa' of https://github.com/Uni-Heidelberg/Uni-HD-App into Mensa

Conflicts:
	uni-hd.xcodeproj/project.pbxproj
removed overlay properties from maps model
implemented building detail vc
Merge branch 'Maps' into develop

Conflicts:
	uni-hd/news.storyboard
Merge branch 'Mensa' into develop