ENYO-875: moon.VideoPlayer remoteKey 'stop' is not stop playing
ENYO-875: moon.VideoPlayer remoteKey 'stop' is not stop playing

Issue:
moon.VideoPlayer has a remoteKeyHandler which is calling this.jumpToStart() when 'stop' button is pressed.
But, jumpToStart is calling play when it is called while it is playing. So, it's play again after change current time to 0 and paused.

Fix:
- Set this._isPlaying as false before calling  this.jumpToStart() to block calling play.
- Call this.sendFeedback('Stop'); after calling this.jumpToStart() to change feedback text from 'paused' to 'stop'.

DCO-1.1-Signed-Off-By: Kunmyon Choi kunmyon.choi@lge.com

mcanthony/moonstone,mcanthony/moonstone,enyojs/moonstone,mcanthony/moonstone