(specifying a multilang name allows to have different start pages too!)
I've found some bad XHTML in this module and some inconsistencies
with different cased page-names. Are wikipages different if their name case is
different? If no, we should fix it.
All the page headers work correctly also on the site course.
On the site page the modules don't require login unless necessary or required by $CFG->forcelogin.
I've left out stuff that didn't seem necessary ... including a lot
of the Wiki plugins which were quote large... I'm not sure if this
is currently working ... I'm about to try it out.