[IMP] res_users: improve get_groups_by_application
[IMP] res_users: improve get_groups_by_application
splbio/openobject-server,MarkusTeufelberger/openobject-server,gisce/openobject-server,ovnicraft/openerp-server,ovnicraft/openerp-server,splbio/openobject-server,MarkusTeufelberger/openobject-server,vnc-biz/openerp-server,gisce/openobject-server,vnc-biz/openerp-server,MarkusTeufelberger/openobject-server,splbio/openobject-server,gisce/openobject-server