Add CM Legal (2 of 2)

New settings activity for CM Legal info. Needs vendor/cm piece.

PS2: Manual Rebase

Cherrypick from CM-11

Change-Id: I6238afe23f957a571d29c186447b455ecb7a186e
Merge branch 'cm-10.2' of github.com:CyanogenMod/android_packages_apps_Settings into cm-10.2

Merged changes from upstream