don't load extension config if extension are disabled

Author: Zsailer

jupyter_server/serverapp.py

@@ -1542,7 +1542,8 @@ def initialize(self, argv=None, load_extensions=True):
         if self._dispatching:
             return
         self.init_configurables()
-        self.init_server_extension_config()
+        if load_extensions:
+            self.init_server_extension_config()
         self.init_components()
         self.init_webapp()
         self.init_terminals()

jupyter_server/tests/test_extensions.py

@@ -137,12 +137,8 @@ def test_merge_config(self):
         toggle_serverextension_python('mockext_both', enabled=True, user=False)
         toggle_serverextension_python('mockext_both', enabled=False, user=True)
 
-<<<<<<< HEAD:jupyter_server/tests/test_extensions.py
         app = ServerApp(jpserver_extensions={'mockext_py': True})
-=======
-        app = NotebookApp(nbserver_extensions={'mockext_py': True})
         app.init_server_extension_config()
->>>>>>> 134c8b6c0... surface config.d nbserver_extensions to the NotebookApp config object:notebook/tests/test_serverextensions.py
         app.init_server_extensions()
 
         assert mock_user.loaded