From [~steveswinsburg] on October 12, 2015 11:48
And it's possible that the user will click to import again or click away.
We need some sort of overlay saying that the import is running, buttons to be disabled, or to spawn a new thread and have it run in the background.
We also probably need to lock the entry of grades while its running. Sounds like we are going to need some multithreading here to solve this.
Copied from original issue: steveswinsburg/gradebookNGGIT2-263