IMP add filter Not company on supplierinfo

purchase_usability_extension/supplierinfo.py

@@ -0,0 +1,12 @@
+# coding: utf-8
+# © 2015 David BEAL @ Akretion
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+
+from openerp import models, fields
+
+
+class ProductSupplierinfo(models.Model):
+    _inherit = 'product.supplierinfo'
+
+    supplier_is_company = fields.Boolean(
+        comodel_name='res.partner', related='name.is_company')