- proxify matrix_box field in PaySheetLine_viewCells and PaySheetModelLine_view
- change a portal_type icon (because it don't exist) to use a existing icon.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@27028 20353a03-c40f-0410-a6d1-a30d3c3de9de