contacts: Holo Light ringtone picker dialog

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

Change-Id: I2619e88a2ab573c18acae3bc05887d5ec3038666
Signed-off-by: Jorge Ruesga <jorge@ruesga.com>