template won't work with CGI::FormBuilder 3.0401, so disable it for now.
* CGI::FormBuilder 3.0401 seems to work ok now with ikiwiki, although
there might still be bugs lurking..
FORM-SUBMIT unusable on customised formbuilder templates. For now,
hardcode the submit buttons in editpage.tmpl instead of using the
template variable, which is ok, since the buttons are static.