Make order of Tags editable by authenticated User

[Waztom]

@boriskovar-m2ms @matej-vavrek ideally the ordering of the Tag priority needs to be left up to authenticated Users to edit and put the highest priority Tags at the top of the navigator. We discussed doing this automatically in the frontend, but this fails when the User uses different Tag naming conventions.

Can you please estimate the amount of work required (Purple/Yellow) to add an up/down arrow on each Tag row to reorder Tags on editing.

A drag-n-drop approach would be nice, but I suspect fails for when the Tag lists become longer.

[Waztom]

@boriskovar-m2ms confirms this will require backend work (the Tag order depends on backend API call/order for Tags). @kaliif will review with Boris.

[mwinokan]

@kaliif please review B/E changes required for this

[mwinokan]

Is this still needed after #1389?