[FIX] orm: raise NotImplementedError instead of strings
[FIX] orm: raise NotImplementedError instead of strings
MarkusTeufelberger/openobject-server,splbio/openobject-server,ovnicraft/openerp-server,vnc-biz/openerp-server,vnc-biz/openerp-server,ovnicraft/openerp-server,gisce/openobject-server,MarkusTeufelberger/openobject-server,MarkusTeufelberger/openobject-server,splbio/openobject-server,splbio/openobject-server,gisce/openobject-server,gisce/openobject-server