ikiwiki/ todo/ web gui for managing tags

Along the same lines as default content for new post and default name for new post it would be helpful if the default web edit page provided a gui for managing tags. Being able to manage tags directly via the text box is wonderful, but having a dropdown box of available tags can be very helpful in a couple of ways:

As with default content for new post I understand that this falls into a bit of a funny space because making changes via svn would bypass this functionality but I given that the web seems to be the way most non-admin changes are made, it still seems a valuable addition for encouraging people to accurately tag content.

MoinMoin has a simple implementation of this, click here to see an example.

--AdamShand