Added a mature click through warning for manga marked as mature.  Changed the url structure to be prettier (imo), now /manga/<manga_id>/<chapter_id>/<page_#> instead of passing as url params.

Fixed up editing manga entries, can't upload yet.  Tags now work.

Jackrabbit sometime before 2.4.3 changed to no long accept any user credentials as valid, so switched to all users using admin/admin (since we don't rely on jackrabbit for user authentication, instead we use the j2ee container).  Need to fix it so that the user name commited on manga is the j2ee user instead of the jackrabbit user.