Made epicenters for infection spawn on floors.

They are now the actual centers.
Merge branch 'master' of https://github.com/AstroTeam/Game
Merge branch 'master' of https://github.com/AstroTeam/Game
Added a custom room system.

Office rooms generate with filing cabinets next to walls.
Custom floors can be set as well.
Merge branch 'master' of https://github.com/AstroTeam/Game

Conflicts:
	astro_demo/src/Ai.cpp
	astro_demo/src/Map.cpp
	astro_demo/src/Map.hpp
Merge branch 'master' of https://github.com/AstroTeam/Game