Should be able to cancel an upload, Ctrl +C probably shouldn't quit the whole thing

[kxing28]

Gdrive uploads are multiple GBs frequently, so they can take a while. Ctrl + C can be used to quit a gdrive upload, but it ends up quitting the entire application very abruptly. We should probably just get rid of the Ctrl+C mapping to quit, and add a button to cancel the gdrive upload alone.