moon.Panels: Moving transitionInProgress before inherited call in finishTransition.
moon.Panels: Moving transitionInProgress before inherited call in finishTransition.

### Issue:
The transitionInProgress is still true on onTransitionFinish event.

## Fix
Moving transitionInProgress false to before inherited call.

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

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