BHV-8007: Do jumpBack/Forward when pressing button for between 200ms and 400ms.

DCO-1.1-Signed-Off-By: Kunmyon Choi kunmyon.choi@lge.com
Merge pull request #1303 from enyojs/BHV-8007-kunmyonchoi

BHV-8007: Do jumpBack/Forward when pressing button for between 200ms and...

Reviewed-By: Cole Davis (cole.davis@lge.com)