Remove password confirmation in config app

Small fix to manually clean up temp dir when creating new temp dir,
small fix to font awesome icons, change the jwt/keystone
validators to not use username/password

config_app/config_util/config/TransientDirectoryProvider.py

@@ -24,6 +24,7 @@ class TransientDirectoryProvider(FileConfigProvider):
         """
         Update the path with a new temporary directory, deleting the old one in the process
         """
+        self.temp_dir.cleanup()
         temp_dir = TemporaryDirectory()
 
         self.config_volume = temp_dir.name