Conflicts:
	product/ERP5SyncML/Document/SyncMLSubscription.py

Refactor code and use proper names.

same as 4c129961.

Complete rewrite of the syncml core engine to make it scallable
Remaining work :
- review of conflict management
- re-implement splitting of big object
- generic unit test for AsynchronousEngine
- complete review of default conduit
- lot of TODO and XXX in the code to check

Now title needs to be configured as a content translation translated property
to be able to search on title.

Conflicts:
	product/ERP5/bootstrap/erp5_core/bt/revision

I doubt anyone wants to fill full_text table with this information.

It's no longer needed to configure using the script

-Titlecase terms, uppercase abbreviations, avoid jargons, add titles to empty title forms....