users in classes were labeled with dotlrn_member_rel if they were not added from the class administratio page. This caused issues with bulk-mailing them by role. Includes upgrade script to properly label these users as dotlrn_student_rel
-performance: writing the function source code instead of calling the plsql function trying not to use views-new stuff: adding the option to store the files in the file system (this is the default now)
Fix bug where hours logged to a task wouldn't show up if the defaultlogger variable (hours2) for a project was not the same as the defaultvariable (hours).
Fixed username constraint problem and added two new optional columns: password (if the admin wants to assign a password) and notify (wether the user should receive an email at all "f" "t").
