Add correct waits in dispatcher

Rollback commit: 3bbc0e3b8fa4b3496f72a473ab9ae99c4f90a214 dequeue method returns future, so it should have wait(). Also the action should have wait(). So we need two waits. This was breaking remote command.

Fixes: http://teampulse.telerik.com/view#item/278119
Merge pull request #507 from Icenium/vladimirov/fix-remote-emulator

Add correct waits in dispatcher