refs #26,#90 Add the proper removeAll to the students data and the
session iqset data when we load a session.  otherwise we got dups.
refs #90 Merge commit 'fa4d8d65648035e9565e112d4d0967a426aac782' into dev

* commit 'fa4d8d65648035e9565e112d4d0967a426aac782':
  refs #26,#90 Add the proper removeAll to the students data and the session iqset data when we load a session.  otherwise we got dups.