Partial fix for bug #1905. For now only tries to nuke users which haven't visited yet. I think full nuke should be decided on by consortium or enforcable using a dotlrn package parameter.
fix for adding static portlets when editing stuff on already created portals (only happen with intances that created portals and then add the recent fixes for static-portals & templates)
fix from Sloan: store attachments in user's shared files folder instead of in the community's file-storage, where they often don't have write privs and there's no good place to put them anyway