Add CM Legal (1 of 2)

Allow defining a ro.cmlegal.url to for T&C and Privacy Policy

Change-Id: I45ffbdd9e472e258ed8c5a63dff0f3b9c7bc04e2
(cherry picked from commit 381a305718e1a34b1ef447faadef6ad6bd77736a)
Merge remote-tracking branch 'cm/cm-10.2' into cm-10.2