[3/3] Install persistence support

New fragment to control install persistence settings.

PS3: Rebase

Change-Id: I76600aa38f450954e9a22c1e549502d3a069aae4

Conflicts:
	AndroidManifest.xml
	res/values/strings.xml
	res/xml/preference_headers.xml

Conflicts:
	AndroidManifest.xml
	res/values/strings.xml