another large clean up of code, all POSTs are now using make_response() and returning json OR are for a form that flask handles with rendering direct html. Where there is a POST with json response, the jscript now calls CheckForJobs() to show it in the F/E. Removed several debugs. Fixed up undocumented BUG where import datetime was wrong, and prefix/suffix also to offer directories near the date of an image. Removed unused routes for clearing messages

user.py

@@ -62,4 +62,4 @@ def changedefaults():
         user.default_storage_folders = False
     db.session.add(user)
     db.session.commit()
-    return "done"
+    return make_response( status="success" )