Add the .xml file extension in the allowed files

module.py

@@ -16,7 +16,7 @@ Compress( api )
 UPLOAD_FOLDER = os.path.join( tempfile.gettempdir(), "NIST" )
 api.config[ 'UPLOAD_FOLDER' ] = UPLOAD_FOLDER
 
-ALLOWED_EXTENSIONS = [ '.nist', '.nst' ]
+ALLOWED_EXTENSIONS = [ '.nist', '.nst', '.xml' ]
 
 ################################################################################
 #    Generic routing