adapted model to server, ui broken
working on daily menu vc
implemented own daily menu tableview datasource
Merge branch 'Mensa' into mensamapping

Conflicts:
	uni-hd/uni-hd-Prefix.pch
fixed daily menu vc display and added favourite symbol
first attempt to implement section headers in news list
added attribute 'simplifiedDate' in news model for usage as sort descriptor
added icon for 'all sources', replaced selection indication by translucency in source navigation bar, replaced read indicator view in news and event cells
Merge branch 'Maps' into News
Merge branch 'Mensa' into News
tweaked date sectioning
tweaked date periods (again)
tweaked sectioning (once more)
several layout adjustments
minor layout tweaks
fixed auto layout issue
Merge branch 'Mensa' into develop
Merge branch 'News' into develop
Merge branch 'Maps' into develop