webkit: Manage video playing state properly when browser goes to background

Issue: Browser App Video streaming not pausing while pressing home Button

Fix : When the Browser goes to the background while the video is playing
      in the fullscreen, the fullscreen mode is exited. While exiting
      the full screen mode the video state is handled properly. So that
      there is no playback in the background.

CRs-Fixed: 509225

Change-Id: I32c306923d2638731d34d216cf006050ce4ad825
Fix ordering of home keypress handling

* Home keypress handling was done out of order, causing an extra go home
  action to be executed.

Change-Id: Ieb2f6ffbf6d1e18a5d4602975f48717089e5c9dc
Fix fetching icons from packages.

Change-Id: I857d35bb601425be56b5eb730d63344e1173e4a2

Conflicts: