Display model version details when looking at worker activities stats

Depends backend#1560 (closed)
Refs https://redmine.teklia.com/issues/3383

The component displaying worker activities statistics for both corpus & processes must now support model versions.

When a model_version_id field is set on a worker activity, the RetrieveModelVersion must be called (similar to the existing call for worker version), and its name must be appended to the title.