[IMP] website_quote: use template's Terms & Conditions

by default, if not the company's configured terms & Conditions will be applied.

Also change the placeholder of Terms & Conditions in the quotation template.

addons/website_quote/models/sale_order.py

@@ -77,6 +77,11 @@ class SaleOrder(models.Model):
             total += line.price_subtotal + line.price_unit * ((line.discount or 0.0) / 100.0) * line.product_uom_qty  # why is there a discount in a field named amount_undiscounted ??
         self.amount_undiscounted = total
 
+    @api.onchange('partner_id')
+    def onchange_partner_id(self):
+        super(SaleOrder, self).onchange_partner_id()
+        self.note = self.template_id.note or self.note
+
     @api.onchange('template_id')
     def onchange_template_id(self):
         if not self.template_id:

addons/website_quote/views/sale_quote_views.xml

@@ -86,7 +86,7 @@
                         </page>
                         </notebook>
                         <field name="website_description" invisible="1"/>
-                        <field name="note" placeholder="An administrator can set up default Terms and conditions in your Company settings."  nolabel="1"/>
+                        <field name="note" placeholder="These Terms &amp; Conditions will replace the default ones set in the Configuration menu." nolabel="1"/>
                     </sheet>
                 </form>
             </field>