the new test 'test_SimpleModuleUpdate', (the test file is not testing only
module creation)

add test for module creation with background (option_html=1)
add test for module update (using the new external method ERP5Site_updateModuleScribus)


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@20223 20353a03-c40f-0410-a6d1-a30d3c3de9de