Splitted up GUI creation into methods, to make it slightly more readable
Merge remote-tracking branch 'origin/gamelogic-sprint2' into gui-sprint2
Handling illegal ship placement
Merge remote-tracking branch 'origin/gamelogic-sprint2' into gui-sprint2
Board coordinates start with 1
Merge remote-tracking branch 'origin/gui-sprint2' into gamelogic-sprint2

Conflicts:
	Battleship/src/main/java/ch/bfh/bti7301/w2013/battleship/Battleship.java