Ref T8377. This adds a standard disable/enable feature to Spaces, with a couple of twists:
- You can't create new stuff in an archived space, and you can't move stuff into an archived space.
- We don't show results from an archived space by default in ApplicationSearch queries. You can still find these objects if you explicitly search for "Spaces: <the archived space>".
So this is a "put it in a box in the attic" sort of operation, but that seems fairly nice/reasonable.