CMFM: Integrate themes app into cmfm app

Required change http://review.cyanogenmod.org/#/c/34118/

Change-Id: I0a2c38e33b10061dedab8f6ff1011bcbace4648d
Signed-off-by: Jorge Ruesga <jorge@ruesga.com>
Merge "CMFM: Integrate themes app into cmfm app" into cm-10.1