Modify the test suite so that it can trigger specific UI interactions

[aaroncox]

Right now the buttons are all just "Use this plugin", which can trigger various states depending on who you're logged in with. This makes it hard to find specific states since it's based on your account.

We need buttons that specifically will trigger different states, like "trigger RAM error" or "trigger CPU error" or "Create wait for wallet screen". These can be potentially added to a new tab of controls?

[deansallinen]

If we also include triggers for components, e.g. Asset, Countdown, List, we could potentially replace Storybook for UI development. This would remove React and simplify devdependencies.