SlideMenu Changes, Grid is available, Sound pauses correctly + merge

SlideMenu Design changes: New order and Size of the MenuButtons, the
Reveal-MenuButton is gone, swipe only on the left side possible

Grid Button is working now

Sound is paused correctly, when entering the menu. When the menu
disappears, the sound resume at the paused moment.
merge
tiny patch that saves new created programs, but does not overwrite any existing programs after leaving the ProgramTVC since the saveToDisk is not fully implemented a.t.m.

Signed-off-by: Ralph Samer <ralph.samer@student.tugraz.at>
Merge branch 'spritekit' of gh:Catrobat/Catty into spritekit

* 'spritekit' of gh:Catrobat/Catty:
  SlideMenu Changes, Grid is available, Sound pauses correctly + merge