Disallow access to Projections tab if projections isn't running

[jen20]

(Note: this is something that's todo and will likely require server change, just putting it here so it's not forgotten)

[jen20]

This needs the projections run state adding to the /info endpoint which requires a bit more refactoring than I'd anticipated. Requires kurrent-io/KurrentDB#256 to be implemented first.

[Gutek]

@jen20 do we need mile stone here? as this depends on ES

[jen20]

@Gutek yes this needs server work as well.

[jen20]

The prerequisite work for this has now been done

[jen20]

Awesome, will pull this in for the RC release.