Add length check for SIREN and SIRET

issue2342
review333001
(transplanted from 9e2eb48f66375d71717e6ca769bb7710c41aaaa5)

address.py

@@ -36,8 +36,9 @@ class Address(Model):
         Check validity of SIRET
         '''
         for address in self.browse(ids):
-            if address.siret and not luhn.validate(address.siret):
-                return False
+            if address.siret:
+                if len(address.siret) != 14 or not luhn.validate(address.siret):
+                    return False
         return True
 
 Address()

party.py

@@ -26,8 +26,10 @@ class Party(Model):
         Check validity of SIREN
         '''
         for party in self.browse(ids):
-            if party.siren and not luhn.validate(party.siren):
-                return False
+            if party.siren:
+                if len(party.siren) != 9 or not luhn.validate(party.siren):
+                    return False
+            print party.addresses
         return True
 
 Party()