Mms: Option to delay SMS Sending

Add feature to delay SMS sending, user being able to cancel
SMS sending by touching the SMS, until set duration is elapsed.

Follow-up of http://review.cyanogenmod.org/#/c/36178/
    (and http://review.cyanogenmod.org/#/c/35231/) on cm-10.2 branch

PS6 : Rebase

Change-Id: If98cac0baa492c6b6a7ffe1cd36b0590f8c81f5c