View - add an attack tower (everywhere...)
Enum player + add medical tower (everywhere)
Creating AddTowerOrder, Testing add and suppress tower (view <--> Engine)
Merge branch 'thomas'

Conflicts:
	img/map/npm0.png
	img/map/npm1.png
	img/map/npm2.png
	img/map/npm3.png
	img/map/npm4.png
	img/map/npm5.png
	img/map/tm.png
Transparency img for TerritoryMap which now take account of the playerTypes before creating it