added MainMensaVC as a container VC
added placeholder for selectDayScrollview
added mensaDelegate
added updateDailyMenu method
some status ideas
Merge branch 'Mensa' of https://github.com/Uni-Heidelberg/Uni-HD-App into Mensa

Conflicts:
	uni-hd/mensa.storyboard
new interface structure
select mensa
cleanup
implemented mensa selection vc flow
Merge branch 'mensaTest' into Mensa

Conflicts:
	uni-hd.xcodeproj/project.pbxproj
	uni-hd/UHDDailyMenuViewController.h
	uni-hd/UHDMensaViewController.h
	uni-hd/UHDMensaViewController.m
	uni-hd/mensa.storyboard
updated VIOSFramework
Merge branch 'Mensa' into develop