Evo: use usergroups to add roles in diffusion list

entities/trunk/admin_entities.php

entities/trunk/admin_listmodel.php

entities/trunk/admin_listmodels.php

entities/trunk/class/class_manage_listdiff.php

entities/trunk/creation_listmodel.php

entities/trunk/img/picto_authorize.gif

entities/trunk/load_listinstance.php

entities/trunk/load_listmodel.php

entities/trunk/manage_listinstance.php

entities/trunk/param_entity_listmodel.php

entities/trunk/xml/services.xml