mograte user_uri->user_id, make tests duynamic
Convert from user_uri to user_id

to match the new returned value from cnxuser, abandon the cnxuser:123 and stick to plain
uuid
improve traceback retuirned on login failure
Enable dyunamic testing

we no longer need fixed value users in the database, but can make sessions temporarily
and use those sesssions for testing purposes.  Global modules likely to be threading probelm and needs removeing