Streamcontroller react to locationchange

Our search is happening via setting the 'q' route parameter.
Our stream search has not reacted to it so only the default handler was fired, performing a page search.

Now we send a message to the backend via websocket and we get back the new search results from the backend. (As Expected)

Fix #1618
If this is only used in the closure, it doesn't need to be added to `$scope` right?