added losing, level timers
renamed TimerAction to LevelTimerAction
Merge branch 'towerdefense2.0' of https://github.com/duke-compsci308-spring2013/vooga into towerdefense2.0

Conflicts:
	src/vooga/towerdefense/model/GameMap.java
	src/vooga/towerdefense/resources/JimmysTestGame.xml
Merge branch 'towerdefense2.0' of https://github.com/duke-compsci308-spring2013/vooga into towerdefense2.0