[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, 1 insertions, 1 deletions

diff --git a/addons/mass_mailing/models/mail_thread.py b/addons/mass_mailing/models/mail_thread.py
index 7bfce705043..e4732527f2d 100644
--- a/addons/mass_mailing/models/mail_thread.py
+++ b/addons/mass_mailing/models/mail_thread.py
@@ -77,7 +77,7 @@ class MailThread(osv.AbstractModel):
         Mail Returned to Sender) is received for an existing thread. The default
         behavior is to check is an integer  ``message_bounce`` column exists.
         If it is the case, its content is incremented. """
-        if self._all_columns.get('message_bounce'):
+        if 'message_bounce' in self._fields:
             for obj in self.browse(cr, uid, ids, context=context):
                 self.write(cr, uid, [obj.id], {'message_bounce': obj.message_bounce + 1}, context=context)