Tiles instantiation optimized and some code clean up

Patch Set 2: removed 4 white spaces and separated Fav contact tile Fix following Lars recommandation

Change-Id: I9ac4853a3c983c7edc8bf5ab79a79cd24a72f2fa

Conflicts:

	packages/SystemUI/src/com/android/systemui/statusbar/phone/QuickSettingsController.java