(3/3) allow to configure lcd density

Change-Id: If043aa731a3515ea644079f1842d48de1f5cfec1
(cherry picked from commit 0cc2579b6abb04566fd831b886a9ce61aa07b375)

Conflicts:
	res/values/cmr_strings.xml
	src/com/android/settings/DisplaySettings.java

(cherry picked from commit 57486d26783d320d5cdf6cdf764e7c73bd44348d)

Conflicts:
	res/values/cmr_strings.xml
	src/com/android/settings/DisplaySettings.java