Allow table columns on Users page to be sorted
|Reported by:||rjollos||Owned by:||hasienda|
This has been on my mind since recent work on UserManagerPlugin in #10586. It should be fairly straightforward to make the columns sortable by clicking on the column headings, so that we can, e.g. sort by Last Login. Sorting by Last Login is the use case I specifically had in mind while considering this feature.