Show indication of how a workspace has been used in a project

[lucyb]

We've recently been discussing how the meaning of archiving a workspace. Usually a researcher does this when they've "finished" with that particular workspace. However, it's not apparent then whether the workspace has actually been involved in producing any outputs that then go into a paper (or other research outcome).

To solve this, we'd like to be able to show when a job last ran on a workspace (or if it ran at all) on the project summary and workspace detail pages.