Made the includable subsites template work (the link to register etc includethe full subsite URL but the link to visit the subsite did not, which meansit didn't work when included as a portlet.
implementing support for groups mapped to a simulation to be marked multiple_cases_p which means that their users can (and should) be cast in many groups. Ticket 41
When adding a user to a group we were checking read permission on the users offered for selection. Since all OpenACS users have a null context_id only the site-wide-admin would have read privilege on them. To also allow subsite admins to add users to groups I removed the read privilege check on the users. See http://openacs.org/forums/message-view?message_id=171339
bump to 5.1.0a1, rename upgrade-5.0.0-5.1.0.sql to upgrade-5.1.0d1-5.1.0d2 since if the from version was 5.0.1 it would not be run, also 5.1.0 was higher than the existing version in the .info file so it would not get run in any case. bug 1673
