Feature request: Transition to Web Components

**Describe the solution you'd like**
Transition to using [web components](https://developer.mozilla.org/en-US/docs/Web/Web_Components) for the Web UI to aid with allowing new developers to work on the project on the (quite complicated) UI side. May also help with breaking down the UI for a mobile UI design.

**Additional context**
It's supported on all supported browsers and uses a class based system like the rest of the project. Means we can keep methods for each part of the UI with the UI definition itself.