Revert "Merge pull request #13852 from bgirard/HomescrenBackground"

This reverts commit d14af806d87a2ca6098ca0a011256cb3b1d4cf9a, reversing
changes made to 5e978dcebd7d122fd11988467c0d300dc51494c3.
NO BUG - test-agent vbump r=me
Merge pull request #14247 from lightsofapollo/test-agent-vbump

NO BUG - test-agent vbump r=me
Bug 942065 - [b2g] auto suggestion uses truncated/shortend words
 - make latin IME out the full word for word suggestion