- changes in SUT definition; every component under a SUT has an abstract name
  that can be referred by the test cases
- user management changes; the name of a new user can be added as text or
  selected from a list of available users; the username is validated using
  ypmatch for NIS environments; issue #90 in github
- added new role CHANGE_SUT; if this role is not selected for production
  servers, the user is not allowed to change the SUT
- fixed a LogServer issue for log_summary; it was happening only for NIS users
- fix for issue#91 ; secondary libraries are loaded
- fix issue #70 ; plugins can be loaded
- updated User Guide