Added action of symetric view on purchase invoice

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@10377 20353a03-c40f-0410-a6d1-a30d3c3de9de

bt5/erp5_accounting/bt/template_action_path_list

@@ -140,6 +140,7 @@ Purchase Invoice Transaction | print
 Purchase Invoice Transaction | source_asset
 Purchase Invoice Transaction | view
 Purchase Invoice Transaction | view_invoice
+Purchase Invoice Transaction | view_source
 Sale Invoice Transaction Line | history
 Sale Invoice Transaction Line | metadata
 Sale Invoice Transaction Line | print