Changed restaurant images into clickable actors. Result of clicking not proper yet though.
Added variables to GameState keeping track of attack mode and which restaurants are involved, RestaurantActor now has clickable buttons and attack mode partially works
Merge remote-tracking branch 'origin/feature/battle_ground'

Conflicts:
	Code/core/src/main/java/utm/csc492/diamondfire/DiamondFire.java
	Code/core/src/main/java/utm/csc492/diamondfire/GameState.java
Updated RestaurantActor to include number of workers (troops).
Merge branch 'develop'

* develop:
  Fix the manifest, and make the view landscape.
  Add unit handling code.
  New speech files.
  Update BattleScreen to use the new Speech system.
  Add touch detection for Units.
  Changed Speech to be a singleton, since we’d be outputting speech from many places.
  Speech is synchronous with the render loop now.
Make some fixes.