UTF8 Openguides

I foolishly offered to make OpenGuides UTF-8 safe. Because I don’t do that enough at work, or something. Anyway, it’s going quite well – because I did all the grunt work in CGI::Wiki a while ago, it’s just a matter of finding all the inputs and outputs and making sure they’re encoded properly. So far, the page contents and names are utf-8 safe, along with the cookie preferences, so your username is good. The search stuff looks scary, and there are various broken plugins, etc, etc, so there’s still stuff to do. I should also do the hooks properly – CGI::Wiki should offer nice functions for this stuff.