Add support for meta filtering in story running

Upgrade to 3.1 as default Core dependency.

Support specification of meta filters in the Run Story page.

If meta filters not set, it should use the 3.0.x compatible StoryRunner method, so users are not forced to upgrade to 3.1, until they need to.

That meta filtering is a 3.1 only features should also be notified on the Run Story page.