* use iframe_content in OOoDocument_viewAsWeb for Drawing and Presentation to have better paginations.
* use OOoDocument_viewAsWeb instead of Drawing_viewAsWeb in all preview for Drawing and Presentation.


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@28347 20353a03-c40f-0410-a6d1-a30d3c3de9de