Uncle button AKA "mark as failed"

[dreeves]

Just as there's a way to click "mark as X% complete" there should also be a way to click "mark as failed" to make the promise be scored as 0% complete and show up colored black the same as completed promises and sorted the same as completed promises. (Or maybe a subtly different color, but that's a separate issue -- #247.)

[patrickvossler18]

Hello, I'd like to help with this issue. But I have a few questions about the task:

1. I think setting up the api endpoint to mark the promise as 0% complete is pretty similar to the mark as complete endpoint. My main questions are:

   • Should we mark tfin as the time when the task is marked as failed or should we have a separate tfail?
   • In the promises model, credit is determined by the parseCredit function which only handles incomplete tasks and completed tasks. Should we add a failed boolean to the promise to handle parsing credit for failed tasks?

2. In terms of UI, is there any preference for where the mark as failed button should go?

   • I've implemented a simple mark as failed button with handlebars but should the frontend part be put on hold until the react transition is finished?