PackageManager: Let com.tmobile.thememanager access privileged permissions

Needed for CHANGE_CONFIGURATION

Change-Id: If50b0926d77e15e18ef5e88d7efac1b7f209d6e4
(cherry picked from commit fb4a9a36253e04c4c5420065a685b2c13f9497e9)
ResourcesManager: Fix theme insertion at boot

This was lost during the 4.4 ActivityThread reshuffle, put it back

Change-Id: I96eadf691973e9a2daa099b55816fc103d129be7
(cherry picked from commit 839286c5aee12ab30dba2af9af2422d0f005bc1c)