Proofreader UI

Added a bunch of UI improvement and some fixes over the weekend!

Using my Subcomponent project is proving to be great for UI components and creating a standardized look.

I think the interface between the Go app and the site needs addressed next. Might do a simple HTTP callback or might look at some other communication options.

I think it's at a point that's usable for basic stuff, like grabbing the site icons or checking the Open Graph tags.