A few additions for migration to webpack

* Fix issues on paths in build and dev files
* Skip yarn to reduce tooling requirements
* Minify CSS assets in production
* Reduce imports on fonts, hardcode font pieces more. There are problems
  with the font family names. Roboto mixin brings in everything as
  `Roboto-Slab-Bold`, which won't match local font name of 'Roboto Slab'
* Fix the development instance more:
  * Add file watching on reST files
  * Execute build docs command after webpack build

Things I'm still not sure about:

- [ ] The actual JS output, I haven't vetted this yet
- [ ] If woff2 and woff are enough for fonts. The NPM packages are missing other formats

Author: agjohnson

package.json

@@ -4,13 +4,12 @@
   "version": "0.4.3",
   "private": true,
   "scripts": {
-    "start": "yarn webpack-dev-server --open --config webpack.dev.js",
-    "build": "yarn webpack --config webpack.prod.js"
+    "start": "webpack-dev-server --open --config webpack.dev.js",
+    "build": "webpack --config webpack.prod.js"
   },
   "dependencies": {
     "bourbon": "~4.3",
     "bourbon-neat": "~1.7",
-    "browserify": "^13.0.0",
     "css-loader": "^2.1.1",
     "file-loader": "^3.0.1",
     "font-awesome": "^4.7.0",
@@ -20,6 +19,7 @@
     "matchdep": "~1.0.1",
     "mini-css-extract-plugin": "^0.6.0",
     "node-sass": "^4.12.0",
+    "optimize-css-assets-webpack-plugin": "^5.0.3",
     "roboto-fontface": "^0.10.0",
     "sass-loader": "^7.1.0",
     "style-loader": "^0.23.1",
@@ -29,6 +29,8 @@
     "wyrm": "^1.0.9"
   },
   "devDependencies": {
-    "webpack-dev-server": "^3.3.1"
+    "webpack-dev-server": "^3.3.1",
+    "webpack-shell-plugin": "^0.5.0",
+    "webpack-watch-files-plugin": "^1.0.3"
   }
 }