Notify callbacks on "any" wallpaper change

Callbacks are not notified when the wallpaper is changed to
a live wallpaper.  This patch notifies callbacks of the change
regardless of the type of wallpaper be set.

Change-Id: Icbb7b825cd7e7096c90c5498b6fee0bc61a3de3b
Themes: Add read/write permissions [1/2]

Change-Id: Id9710a7f6058454f563488288220744b02cc4850

Conflicts:
	core/res/res/values/cm_strings.xml