Merge pull request #13110 from RudyLu/keyboard/Bug925003_greekSMS_master_v1.2

Bug 925003 - Add a new keyboard layout, "Greek SMS" to allow sending mes...
r=djf, julienw (cherry picked from commit 50c5c530ffef00cb7b24d00e23cbed80210105d2)

Conflicts:
	apps/keyboard/js/layout.js