Updates requested by MIGCSA and some fixes

Updates requested by MIGCSA and some fixes

Added management flags for showing and requiring Organization and Title attendee fields.
Updated front-end registration page to handle Organization and Title field updates.
Added Organization and Title attendee fields to Attendee edit in reg event Attendee page.
Now shwing "(unlimited)" for certain attendees available fields in admin when maximum is unlimted for registration event.
Fixed a bad link and some invalid parameter errors in admin areas.