Add new columns for module organization to UI

That introduces a problem: The hash of the module file changes if you edit it, which means that “same” modules will no longer match by hash.

I agree, it should have been sortable from the beginning. If the UI component used for the table headers supports sorting, it would be several hours of work; if not, it would be several weeks of work.

I’m putting my development time into the V4 demo and troubleshooting a problem with the Module Library. (My development plan is here.)