Feature: Sign Out + Alerts

I added the ability to sign out, added a favicon, created a standard layout component.

I also added four types of alerts to my UI library, and the associated colours. I’ve designed everything to be themeable.

I needed this for my next update

1. Add Sign Out
2. Disable logging of read config
3. Add layout component and favicon
4. Added alerts and colours
5. Disable text wrapping in sidebar