EXT-4077 	 Clicking motd link opens two web browser windows
EXT-4077 	 Clicking motd link opens two web browser windows

Fixed click handling weirdness.  On mouse up, mTopCtrl was being passed
the mouse click, and then again the mRootView regardless of whether the
first handled it. Also if mRootView didn't handle a mouse up, it was
traversed again to handle the mouse up.

reviewed by Richard

gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm