Always use record name for origin name

The reference field is always now included in the record name.

issue8299
review271331013

invoice.py

@@ -111,7 +111,7 @@ class InvoiceLine(metaclass=PoolMeta):
         SaleLine = pool.get('sale.line')
         name = super(InvoiceLine, self).origin_name
         if isinstance(self.origin, SaleLine):
-            name = self.origin.sale.reference or self.origin.sale.rec_name
+            name = self.origin.sale.rec_name
         return name
 
     @classmethod

stock.py

@@ -161,7 +161,7 @@ class Move(metaclass=PoolMeta):
         SaleLine = pool.get('sale.line')
         name = super(Move, self).origin_name
         if isinstance(self.origin, SaleLine):
-            name = self.origin.sale.reference or self.origin.sale.rec_name
+            name = self.origin.sale.rec_name
         return name
 
     @classmethod