2 - fix link to mailbox.css
3 - you can now just add you mbox as foo.mbox (MH and Maildir to follow)
7 - put back loadplugin of filecheck, without which everything fails
10 - document dependency on patched filecheck
14 - kinda sorta working.
15 - HTML attachement handling could be improved. Most text/html
16 are deleted by default. Bad html is recognized as text/plain.