* add newest_only option in getRepositoryBusinessTemplateList() so that it only returns the newest one for each business template title.
* reinstall option in updateBusinessTemplateFromUrl() just calls install(force=True).


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@43192 20353a03-c40f-0410-a6d1-a30d3c3de9de