Mms: Allow to delay SMS Sending

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

Patch Set 2:
	Add screen snapshot.
		http://i49.tinypic.com/148qvl.jpg
		http://i49.tinypic.com/2zgub5w.jpg
		http://i48.tinypic.com/4q0ll3.png
Patch Set 3:
	Merge Andrew Jiang's suggestion for English.
Patch Set 4:
	Reformat code.
Patch Set 5:
	Move all strings to cm_string.xml and array to cm_array.
        Remove unnecessary comment and whitespace.
        Remove the duplicate string '10 seconds' in cm_array.xml.
        Rewrite the comment.
Patch Set 6 :
	Rebased
	Changed Delay strings / values / default
	Removed Chinese translations
	Updated / Removed comments line spotted by Reviewers
	Updated string :
		Shortened
		Updated Countdown (no more big red)
		Added Info ("touch to cancel")
		Use of plurals strings

New Screenshots Gallery : http://imgur.com/a/PosI3#0

Change-Id: I9dd8e440abd3a632daa8d29cf2d7c9c4ea3880af