rearranging of xml
balanced the timeupdating and constant needs
Merge branch 'Dev' into constants
removed the title bar
Merge remote-tracking branch 'origin/Dev' into bugfix_notifications_majoulf

Conflicts:
	CrayCray/src/se/chalmers/dat255/craycray/activity/MainActivity.java
	CrayCray/src/se/chalmers/dat255/craycray/model/NeedsModel.java