Initial UI Overhaul

[eddiewang]

ready for merge
ready for review
This PR achieves the following:

Build System:

• Update packages that are out of date.
• Rework the webpack build pipline.
• Add webpack build pipelines for dev mode vs. prod.
• Use the standard JS lint with prettier-standard for formatting.
• Add git hooks with husky for lint checks before git commits.
• Update all js files with new lint rules.
• Make the html files automatically require between Dev and Prod js builds based on env.
• Hot reload for react components.
• CSS live reload for all plugins as well as the global css files.

UI:

• Rework Header and Sidebar to match new branding guidelines
• All core plugins updated with slightly more spacing for header components
• Core plugins updated to match new branding guidelines

The majority of the backend changes made are upgrades to the DX, which will hopefully make contributing to Sia-UI a nicer experience.

With this PR, developers can now run npm run dev to have a fully functional, hot reloadable Sia-UI app. Also, if contributors have different stylistic differences in the way they write code, the git hooks will automatically reformat them to standardjs rules on commit with husky.

Screenshots of the UI:

[lukechampine]

seems weird to me that git would be called directly from package.json. I'd rather have this command just do the linting, and let the user call git add -u separately.

[lukechampine]

why did the package.json explode in size?