Streams not updating by default.

Whenever I click a stream to see what's going on, I'd like the stream to keep updating. At the very least, I'd like the stream to keep updating after I enable it and then refresh the page, so I can bookmark it.

## Expected Behavior

Remember the updating/refresh state of a stream in the URL.

## Current Behavior

The frontend and presumably the backend do not remember that I was in "updating" mode when looking at the stream.

## Possible Solution

Put some state in the URL to re-enable updating after a page refresh. Alternatively, add a preference for me to always start refreshing when I look at a stream.

## Steps to Reproduce (for bugs)

1. Click any stream in Graylog.
2. Observe that it is not updating by default.
3. Enable updates.
4. Refresh the page: observe that updating is no longer enabled.

## Context

It's annoying af.

## Your Environment

* Graylog Version:
* Java Version:
* Elasticsearch Version:
* MongoDB Version:
* Operating System:
* Browser version: