Add help text

issue6729
review38581002

configuration.py

@@ -14,6 +14,7 @@ class Configuration(CompanyMultiValueMixin):
     __name__ = 'sale.configuration'
     sale_price_list = fields.MultiValue(fields.Many2One(
             'product.price_list', "Sale Price List",
+            help="The default price list for new parties.",
             domain=[
                 ('company', '=', Eval('context', {}).get('company', -1)),
                 ],

party.py

@@ -16,6 +16,7 @@ class Party(CompanyMultiValueMixin):
     __name__ = 'party.party'
     sale_price_list = fields.MultiValue(fields.Many2One(
             'product.price_list', "Sale Price List",
+            help="The default price list for new sales.",
             domain=[
                 ('company', '=', Eval('context', {}).get('company', -1)),
                 ],

sale.py

@@ -11,6 +11,7 @@ class Sale:
     __metaclass__ = PoolMeta
     __name__ = 'sale.sale'
     price_list = fields.Many2One('product.price_list', 'Price List',
+        help="Use to compute the unit price of lines.",
         domain=[('company', '=', Eval('company'))],
         states={
             'readonly': Or(Not(Equal(Eval('state'), 'draft')),