Reconsider animations for sunder/recover UI

[garrettr]

During both the sunder and recover UI flows, there is a progress indicator animation displayed between triggering either a sunder or recover action and displaying the resulting output. Currently, a large Sunder shield icon is overlaid on the input form and the inner keyhole rotates.

It is important to note that this animation is not, strictly speaking, necessary. In most cases the cryptographic operations complete so quickly that displaying a progress animation is unnecessary. The concept for adding the animation here was developed during the UI/UX design phase, since our initial user testing showed that some people were confused by how quickly the cryptographic operations completed, and adding a progress indicator helped them understand what was going on between entering input and receiving output.

I see a couple of possible approaches here:

1. If the cryptographic operations are found to be reasonably fast, we might consider removing the animation and reworking the UI on the output views so it is clear that the requested action is complete and the output is available.
2. If we still want to use a progress indicator animation, we might consider implementing one of the more elegant animations prototyped by our designers:
   Sunder Animations.zip.

[GabeIsman]

Some interesting context on The Atlantic: https://www.theatlantic.com/technology/archive/2017/02/why-some-apps-use-fake-progress-bars/517233/