Fix UndoBar display issue in Google Now mode.

If Google Now mode is enabled in Trebuchet, the UndoBar will unintentionally
be displayed in CM Home after a reboot, until swiping to Google Now the first time.
Fix this by hiding it as soon as the view is created. Add a minor line
wrap style fix.

Change-Id: Ibd5bedb846aed66905db9f88c870d08d3e4d68c3
(cherry picked from commit 8ac22f20e7d178da3b3ee96c3f4c5b515153bba5)