> Does the --asume option support wildcards??
No. Buy you can use something like:
--assume jsp,php,js0,js1,js2,js3=text/html

> My second question is: When I do an update of the site 
(the
> same as mentioned above) it keeps regenerating the old
> content, even when I remove the files I want to update 
from
> the ht-cache folder.

You mean, even when you erase the cache?? You did select 
the "update.." feature, and NOT the "continue.." one?