customize (able) column headers on issues page (BB-8239)

would be fantastic to be able to customize the headers on the issues page - and this should be fairly easy. For example - i don't use 'version' but do use 'component' field. would be nice to remove the 'created' and 'version' field and add the 'component' field!!!

this shouldn't be too tough to implement either in the settings page. it seems like the only settings available are whether or not the issue tracker exists and if it is private or public.

Thanks!