because convertToBaseFormat was not able to import html.
Now OOoDocument is able to successfully convertToBaseFormat html content (or any other),
thanks to content_type parameter which is now given to conversion tool.
Previous implementation was storing html content into
base_data instead of data, but convertToBaseFormat was never called.

* The method convert on oood_commandtransform was useless.
* Call convertToBaseFormat once temp_document is created




git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@39049 20353a03-c40f-0410-a6d1-a30d3c3de9de