Merge pull request #21156 from RudyLu/keyboard/Bug1029798

 Bug 1029798 - Auto suggest should not add a character space as it makes..
r=djf
a=2.0+
(cherry picked from commit cfa144ea2400f99db77669c9954bb2cdeaac2526)

Conflicts:
	apps/keyboard/test/unit/suggest_test.js