FarmViewWindow加监听，ui.building包重构
Merge branch 'master' of https://github.com/LuciusYu/TownSimulator.git
some bugs
Merge branch 'master' of https://github.com/LuciusYu/TownSimulator.git

Conflicts:
	TownSimulator/src/com/TownSimulator/entity/building/Building.java