ikiwiki/doc/bugs/jquery-ui.min.css_missing_some_image_files.mdwn

This is very minor. Noticed in nginx's logs that jquery-ui.min.css (the attachment plugin uses this) keeps referencing some png files that are not available in public_html/mywiki/ikiwiki/images/  These should be included in underlays/attachment/ikiwiki/images/ in the source repo and seem to be copied from /usr/local/share/ikiwiki/attachment/ikiwiki/images/  when I compile a new wiki.  The complete list of images jquery-ui.min.css is looking for can be found here. https://github.com/jquery/jquery-ui/tree/1.8.14/themes/base/images

> Do you have a list of files that are *actually* used when ikiwiki is
> running? I don't want to include a lot of files that jquery only 
> uses in other situations. The currently included files are exactly those
> that I see it try to use. --[[Joey]] 

Fair enough. These 3 files are the only ones that appear consistently in nginx error logs.
ui-bg_glass_75_dadada_1x400.png
ui-icons_454545_256x240.png
ui-bg_glass_95_fef1ec_1x400.png

> Hmm, that's most of the missing ones. I just added them all. [[done]]
> --[[Joey]]