Prior to this implementation, editor will not receive translation updates done by CopyTrans or REST(i.e. upload translation file though web UI or push from client).

Example workflow:
- open an document in editor and leave it open.
- open another tab or browser instance and navigate to the same project version.
- run one of following:
   upload translation via web UI.
   client push translation (mvn zanata:push -Dzanata.pushType=trans).
   invoke copyTrans (ensure copyTrans has translation to copy from).

Expected result:
Translation done by any of the above should be broadcast to any open editors. This includes latest translation and statistics.