Cutting off internet during download leaves the download in a broken state.

[gregtatum]

I don't see that I can cancel it. Even stopping / starting opuscleaner leaves it in the dimmed out state. I'm assuming I'll have to go in and try to manually remove it.

[gregtatum]

Actually this was a user error. I had two copies running at the same time.

[gregtatum]

Actually looking at this again, I think this is an issue.

Steps to reproduce:

• Start downloading a dataset
• Turn off wifi mid-way.
• Turn wifi back on

Expected results:

• The download is canceled and the UI is updated.
• The download is resumed

Actual results:

• The button is just dimmed out with "downloading".