Left menu can move if too big.
Merge branch 'master' of https://github.com/paillardf/IC05_GrapheMobile

Conflicts:
	graphe-mobile/src/com/utc/graphemobile/element/LeftMenu.java
	graphe-mobile/src/com/utc/graphemobile/input/UIEventListener.java
	graphe-mobile/src/com/utc/graphemobile/screen/GrapheScreen.java