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.

OO-3297: refactor the user management to use organization for managing the roles instead of named security groups

OO-2354: decouple attribute sued to search a user on the LDAP server from the user identifier and make it configurable, add embbeded LDAP server for unit tests

OO-2172: refactor the spring configuration to be more Spring 4 friendly, remove the cycle generate by the properties injection, deployment of course and user in a separate module

--HG--
branch : bps