Settings: Allow access for external apps to launch ThemeSettings
Fragment directly

Squashed commit:
https://github.com/AOSPA/android_packages_apps_Settings/commit/db0151cf83e0f99f4b02e67b36fc7303dcc6ff7f

Change-Id: I93b676d3eb570c7064eeb4217c8e420a186c8e32

Conflicts:
	AndroidManifest.xml
	src/com/android/settings/Settings.java

Conflicts:
	AndroidManifest.xml