Supply only the option delete action to prevent confusion and errors.
Make product options actually work.

The UX here is still far from idea, however at least it actually works now and any prospective UI ideas have been deleted or hidden.
Retain new values on validation error.

FIXME: The old markup cgi tag doesn't interpret tag values, work around with new cgi markup and accessing the original repeat value as with .evaltag
Implement option value move arrows the hard way since dboptionvalue_move is not available on prodopt_edit.
Retain default_option selection on validation error.
Option value fields are required, mark them so.
Rework move macro, now make_arrow images in new universal macro.
Rework option value move arrows with modern arrow macro and some evaltag bridging.
Include current article title in page title.
Add back button.
Add simple inline styles macro for adminmenu buttons.
Add new macros for moving images and files.
Add new mini adminmenu button macros for children, images and files.