[IMP] add exception message on deletion of partner if there is any related user existed
[IMP] add exception message on deletion of partner if there is any related user existed
MarkusTeufelberger/openobject-server,ovnicraft/openerp-server,ovnicraft/openerp-server,MarkusTeufelberger/openobject-server,gisce/openobject-server,gisce/openobject-server,splbio/openobject-server,MarkusTeufelberger/openobject-server,splbio/openobject-server,splbio/openobject-server,gisce/openobject-server