Trebuchet : Support for custom icons per shortcut

Allows user to assign custom icons from icon packs to individual
homescreen shortcuts.

Change-Id: I6613b5f3e6517485a6f83aa5f6769e22bb7f18dc
Merge "Trebuchet : Support for custom icons per shortcut" into cm-10.2
Trebuchet: Update Polish translation

Change-Id: Ia4f28209c4d705c94d2f320c087779de25065a55
Merge remote-tracking branch 'upstream/cm-10.2' into HEAD
Also removed from CM_arrays and CM_strings things that are not working on
hellfire Gestures
Conflicts:
	src/com/cyanogenmod/trebuchet/BubbleTextView.java
	src/com/cyanogenmod/trebuchet/ShortcutInfo.java

Change-Id: Iadb7c734e2a6e87e174474bf65ba97087b181516