Long overdue quick hack to prevent business template system from importing non-xml files. This is consistent with the not-less-quickhack user for object naming which just strips the 4 last characters of the filename, and will fix the case of accidental import of backup files (Foo.xml~) which led to creation of "Foo." objects.


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@15136 20353a03-c40f-0410-a6d1-a30d3c3de9de