[FIX] base : _get_group() method corrected
[FIX] base : _get_group() method corrected
MarkusTeufelberger/openobject-server,MarkusTeufelberger/openobject-server,gisce/openobject-server,gisce/openobject-server,splbio/openobject-server,MarkusTeufelberger/openobject-server,ovnicraft/openerp-server,ovnicraft/openerp-server,splbio/openobject-server,vnc-biz/openerp-server,gisce/openobject-server,splbio/openobject-server,vnc-biz/openerp-server