reorder columns in _fs_deletelog table

For beta2 _fs_log_delete() should be changed to have,
INSERT INTO _fs_deletelog (event_id, file_id, owner_id, group_id, "path", "name", repo, params)
    SELECT _current_or_new_event(), OLD.id, OLD.owner_id, OLD.group_id, OLD."path", OLD."name", OLD.repo, OLD.params;
to make it less brittle, but that will have to wait.
Merge pull request #1743 from mtbc/fix-deletelog

accommodate PL/pgSQL that logs deletes