Enable configurable set of artifacts

[aashish24]

No description provided.

[curtislisle]

The KVis subcontractor, David Mackey, completed an initial implementation a few weeks back. When the PR was reviewed, Zach had some style requests -- related to how to initialize the new Django models. David tried, but was not able to implement all of Zach's suggestions successfully.

The PR (#574) has been updated to partially address the request. After about two weeks of engineering attempt, I directed Dave to continue with the needs for the Lung Cancer application, instead.

[zachmullen]

Thanks Curt. I can take over the branch if it's something we want to get merged.

[dzenanz]

Yes, we would like to have this feature.

[curtislisle]

@zachmullen , yes, please take a look. David ran into some issues where the artifacts weren't initialized early enough in startup for the Vue UI to be responsive. Maybe you can incorporate this more quickly.

[curtislisle]

An update, we have fallen back to the approach that worked for us and will revisit this issue when we have a consistent "annotation version" of MIQA. We can then consider what parts of this solution we want to include through a PR.