[IMP] use model._fields instead of model._all_columns to cover all fields

The old-api model._all_columns contains information about model._columns and
inherited columns.  This dictionary is missing new-api computed non-stored
fields, and the new field objects provide a more readable api...

This commit contains the following changes:

 - adapt several methods of BaseModel to use fields instead of columns and
   _all_columns

 - copy all semantic-free attributes of related fields from their source

 - add attribute 'group_operator' on integer and float fields

 - base, base_action_rule, crm, edi, hr, mail, mass_mailing, pad,
   payment_acquirer, share, website, website_crm, website_mail: simply use
   _fields instead of _all_columns

 - base, decimal_precision, website: adapt qweb rendering methods to use fields
   instead of columns

1 files changed, 2 insertions, 2 deletions

diff --git a/addons/decimal_precision/tests/test_qweb_float.py b/addons/decimal_precision/tests/test_qweb_float.py
index 93334170f37..c481dba2fd9 100644
--- a/addons/decimal_precision/tests/test_qweb_float.py
+++ b/addons/decimal_precision/tests/test_qweb_float.py
@@ -8,10 +8,10 @@ class TestFloatExport(common.TransactionCase):
 
     def get_converter(self, name):
         converter = self.registry('ir.qweb.field.float')
-        column = self.Model._all_columns[name].column
+        field = self.Model._fields[name]
 
         return lambda value, options=None: converter.value_to_html(
-            self.cr, self.uid, value, column, options=options, context=None)
+            self.cr, self.uid, value, field, options=options, context=None)
 
     def test_basic_float(self):
         converter = self.get_converter('float')