[1/2] Allow hiding frequently contacted lists

2nd part is this: http://review.cyanogenmod.org/#/c/49785/
but we use CMs ContactsCommon so it`s already in.

Change-Id: I09501cf9f851109ede640b80a9e0b1848ddf4a80
Signed-off-by: Dan Trifan <jimsth@gmail.com>