[3/3] settings: Change density on the fly

Change-Id: Ifd036c75f0423c334f8e25aaf6b3229833e779d7
Merge commit 'refs/changes/66/166/1' of https://gerrit.slimroms.net/SlimRoms/packages_apps_Settings into vaosp

Conflicts:
	res/values/slim_arrays.xml
	res/values/slim_strings.xml