Change language settings and get rid of static files

[michplunkett]

Describe your changes

I updated the language settings in .eslintrc to just look for browser and node JS syntax and removed the watching of the css and js folders since those are never being modified by users. The reason the were removed other than that was because they will update since we are always taking the latest files and it is a bit confusing from a user's perspective. We need the files to be there, but we really don't care what is in them as we presume the maintainers of the libraries have checked.

Bonus: The format function now runs when you run the gulp command.

Checklist before requesting a review

• All features within the repository still work on my local dev environment.

icj-project-rig % gulp dev
`import sass from 'sass'` is deprecated.
Please use `import * as sass from 'sass'` instead.
[00:31:25] Using gulpfile ~/Documents/GitHub/icj-project-rig/gulpfile.js
[00:31:25] Starting 'dev'...
[00:31:25] Starting 'default'...
[00:31:25] Starting 'clean'...
[00:31:25] Finished 'clean' after 3.78 ms
[00:31:25] Starting 'clean'...
[00:31:25] Starting 'styles'...
[00:31:25] Starting 'copy'...
[00:31:25] Starting 'nunjucks'...
[00:31:25] Starting 'bake'...
[00:31:25] Finished 'clean' after 660 μs
[00:31:25] Starting 'lint'...
[00:31:25] Starting 'scripts'...
[00:31:25] Starting 'images'...
[00:31:25] Finished 'nunjucks' after 123 ms
[00:31:25] Finished 'bake' after 125 ms
[00:31:26] Finished 'lint' after 356 ms
[00:31:28] gulp-imagemin: Minified 0 images
[00:31:28] Finished 'styles' after 3.04 s
[00:31:28] Finished 'scripts' after 2.92 s
[00:31:28] Finished 'copy' after 3.04 s
[00:31:28] Finished 'images' after 2.92 s
[00:31:28] Starting 'format'...
[00:31:28] File 'docs/books/the-clown.html' was not formatted with Prettier
[00:31:28] File 'docs/books/the-hearing-trumpet.html' was not formatted with Prettier
[00:31:28] File 'docs/books/the-shipping-news.html' was not formatted with Prettier
[00:31:28] File 'docs/index.html' was not formatted with Prettier
[00:31:28] Finished 'format' after 102 ms
[00:31:28] Finished 'default' after 3.15 s
[00:31:28] Starting 'serve'...
[Browsersync] Access URLs:
 --------------------------------------
       Local: http://localhost:3001
    External: http://192.168.0.116:3001
 --------------------------------------
          UI: http://localhost:3002
 UI External: http://localhost:3002
 --------------------------------------
[Browsersync] Serving files from: docs

[michplunkett]

Since the files in here are being updated by gulp, there really isn't any need to store them, etc. What matters is the files they are editing.

[michplunkett]

Here's the most meaningful change.