Login happens only with authentication informations, identity name is
now only used for legacy directory name. User name of authentication can
be changed. LDAP users can be imported with LDAP::ldapUid. Users can be
imported in courses, groups... with First name last name.

Hide the SMS phone number in lists and forms, disable the buttons to
change it if the property is read-only, add an option to define if the
user is asked or not for SMS phone number at login

OO-1770, OO-1769: allow pseudonym and guest posts, refactor the message model to hold only threads or messages of a unique thread in memory, minimize the number of joins on query, minimize the number of queries on peekview, remove buggy docking feature...

OO-533: in details implements list of pools, groups and authors, list rename and delete, imports question item in QTI 1.2 editor...