Summary:
Currently if I share a doc with a friend, and then soft-delete a doc
in the same workspace, that friend will see the workspace in their
trash (empty, but there).
This adds a test for the issue and resolves it by filtering out
docs at the sql level that used to be filtered out by javascript.
Test Plan: added test; existing tests pass
Reviewers: dsagal
Reviewed By: dsagal
Differential Revision: https://phab.getgrist.com/D2557
Summary: This moves enough server material into core to run a home server. The data engine is not yet incorporated (though in manual testing it works when ported).
Test Plan: existing tests pass
Reviewers: dsagal
Reviewed By: dsagal
Differential Revision: https://phab.getgrist.com/D2552
