- file_name become filename
- filename values are not stored in source_reference
Contribution Tool will not honour id arguments.
Contribution Tool can create any kind of document.
Portal Contribution Registry can read extention, content_type and read content_type from data
to guess what will be the best Portal Type to use.

All discoverable methods (IDiscoverable) can change the portal_type of document.
  (migratePortalType)
User can change portal_type of document through UI with simple Action.
Crawling will not hardcode ids of document depending of their URLs thanks to 
Portal Url Registry





git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@40971 20353a03-c40f-0410-a6d1-a30d3c3de9de