Settings: Make settings searchable.

Signed-off-by: Adnan Begovic <adnan@cyngn.com>
Signed-off-by: Danesh Mondegarian <danesh@cyngn.com>
Change-Id: Ic06dca33bf8fd0ef8f63f51e131b70fe730cb7c5

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