Improved startup time by about 50%

Removed submit buttons (now the exit button submits)
Fixed screen position/size saving.
Fixed crashes starting up.
JFrame opens faster.
    Now opens blank, to shave off 100ms on a fast computer.
Startup time greatly improved
    Loading views and determining window size is now done in parallel
    50% speed increase in loading time (excluding things happening after dropbox connection)
    Threaded downloading of grades on startup (saves about 700ms on a fast computer)
    Entire startup now takes about half the time it did before (1.7 seconds instead of 4).
        And there are several states where it now shows the progress of opening.
    Filebrowser now shows before data is populated
    Grades are now recived and parsed in the background (and don't hold up filebrowser).