Set notification number for 2 and more messages

This adding feature to show counts only for 2 and more messages
like on Gmail app.

Extension for http://gerrit.aokp.co/#/c/8374/

Change-Id: Ic1d93df19f52742aeff932a7a1b4bb222fdb78b2
Signed-off-by: kecinzer <kecinzer@gmail.com>
Remove DEBUG to avoid to run checking at every turn

Needn't to run storage checking in DEBUG mode at every turn,
it will make "DELETE OLD MSGS" always be checked in Mms Settings

Change-Id: I4412f6771695c84371cee543ec2276285f3fca07
Signed-off-by: Roger Chen <cxr514033970@gmail.com>
Merge remote-tracking branch 'aokp/jb-mr1' into jb-mr1