-Added previous and next button on main video player.
-Reverted double tap to seek for popup and main video players.
-Improved shuffling to use recovery record.
-Changed shuffling to place current playing stream to top of queue.
-Fixed exception when removing last item on queue.
-Changed fast forward and rewind button to previous and next on background notification.
-Changed background notification to not update when screen is off and update immediately when screen is turned back on.
-Removed unused intent strings.
-Changed "Append" to "Enqueue" for append text.
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