email: Holo Light ringtone picker dialog

Depends on
http://review.cyanogenmod.org/#/c/61392
http://review.cyanogenmod.org/#/c/61393

Change-Id: I5e828ca7379525d37358d8970fb53bba2aad24f6
Signed-off-by: Jorge Ruesga <jorge@ruesga.com>