trying to fix /etc/hosts

fix /etc/hosts for test env

fix unit test and fix the way ldap connexion options are handled

adding test for add/delete groups

small reorganization

fix and add unit tests on ldap backend

fix search display ...

* fix attritues handling, not using backend attribute name but key given
  in attributes.yml

fix unit tests + add graph method ...

* fix unit tests on roles (adding mandatory description)
* adding a method to get roles graph in json

implementing a method to get groups to remove ...

* implement a way to remove roles from a user
  without removing groups of roles the user keeps

adding unit tests

simplify roles configuration (backend groups)

better default configuration and content in test ldap

implementing weight and normalizing each kind of attributes

implement search

adding key handling

adding key and fixing unit tests

add unit test for get_user

adding unit test for del user if user don't exist

adding test on login

fix test configuration

Merge branch 'master' of https://github.com/kakwa/ldapcherry

adding creation of a ext4 partition

fix configuration

add unit test for get_groups

fix test on ldap backend

adding methods add_user and del_user ...

* adding add_user
* adding del_user
* adding unit tests
* adding configuration parameters for adding users

adding objectclasses options

implementing search users ...

* adding search
* adding unit tests

adding search template

multiple changes ...

* implemeting recover user attributes
* adding a unit test for unavailable ldap
* adding a parameter timeout to set the ldap timeout connexion