Revert "Revert "Revert "more ai"""

This reverts commit 3d9a649e5d8335156276af9c23e75132c78e0c06.

Conflicts:
	src/AiUnit.hpp
	src/Images.cpp
	src/Images.hpp
	src/Unit.cpp
	src/Unit.hpp
	src/ZeroGameEngine.cpp
	src/main.cpp