Fix progress indicator after a failed run

[kwabenantim]

Description

When an uploaded model fails to run, subsequent runs for other models appear to fail (the runs actually complete successfully in app-manager but show up as failed on the client). This behaviour usually continues until the app-manager is restarted.

TODO:

• Prevent subsequent runs from failing, no matter the cause of the first failure.
• Show warning logs to users

[mirams]

Would it be useful to have a ApPredict --dry-run --model <whatever> sort of option, that just converts the model and then passes/fails appropriately?

I guess you'd want to report to the user:

1. Successful Chaste conversion?
2. What currents are available to apply block to (and then if any are missing they should annotate them)

[mirams]

Eeeek, this wants to be fixed as a priority then if anyone can upload a model and break it! What's actually the problem do we know?