This will make sure already processed rules are persisted
in case a timeout occurs while processing the next ones,
ensuring that *some* progress can be made in most cases.
* make proxy method of create/write methods of subcribed rule object to generate log details
* Move data of scheduler to check action rule every 4 hours from crm module into base_action_rule
bzr revid: hmo@tinyerp.com-20100624061755-blx8nzf8h9tr8xar