Add Money to Tower and Mob and increase or decrease player money. 
Delete Mob if he get to the end of the playingfield and decrease player
life.
Add public Controller Mehtodes which can use for Tui, Gui and Wui.

Problems: To check if there is a free way for the mobs we must use
gamecontext inside playingfiel.

Bugs: Set 4 towers mobs were directly delete at start.