Improve view creation in the context of stream search page.

When a user opens the stream search page a new view is being created. When creating the view, a relation for the stream id gets defined by calling `ViewActions.create` with the stream id as a parameter. We should improve this step by e.g. using callback function which allows the view modification. The callback function would be more dynamic, because it allows any kind of modification.

## Your Environment
* Graylog Version: Graylog 3.2.1