Themes: Only kill launchers if overlays or icons changed

There is no need to kill the launcher for every coponent changed.
The only ones that really concern us in regards to killing launchers
are MODIFIES_OVERLAYS and MODIFIES_ICONS

Change-Id: I840b8e2ecd4b52a33f352809c5d3d2c7e92ce85e
Themes: Update provider with components that were applied

There may be times when one or more components do not get applied
so we should remove them from the component map and then update
the provider after all changes have been made.

Change-Id: I75d2a674d84c6a0de3f0b613d1dfc50654c2d181
Themes: Load correct common resources

In order to support theming separate packages we need to make sure
we load that theme's common resources.  We were currently loading
the system wide theme's common resources which is incorrect for
package level theming.

Change-Id: Ie594458be9b6b3f4a25c56c9c5c9ba5bd8cf063a