Improved msg system

you can now enter messages
Improved key handling

you can enter messages and return to menu
added private
Finished #48
Polished menu
You can now set your own chunk generator
Updated version string to 1.1.7
Capsulated fields
Refactoring for easier use of engine.

You can now set you own controllers for the game.
Also added test-case for it and improved checks for fail.
Merge branch 'pixel-art' into V1.1
Improvements to WurfelEngine class, refactored name
Re-enabled sharing of view
Added second controller for explosives demo
Improved javadoc and small refactoring
Generator 4 for
You can return to menu.
Added new graphic for second generator
Merge branch 'V1.1' into Minecraft-Port

Conflicts:
	com/BombingGames/EngineCore/Map/Chunk.java
	com/BombingGames/Game/CustomGameController.java
	com/BombingGames/Game/CustomGameView.java
	com/BombingGames/Game/Gameobjects/Block.java
	com/BombingGames/MainMenu/Controller.java
	com/BombingGames/MainMenu/Images/MainMenu.png
	com/BombingGames/MainMenu/View.java