perf: Reduce initial bundle size / async bundle loading (#1456)

* feat: Move to React.lazy

* perf: Remove duplicate babel/runtime

* fix: Run yarn-deduplicate

* Further attempts to remove rich-markdown-editor from initial chunk

* perf: Lazy loading of authenticated routes

* perf: Move color picker to async loading
fix: Display placeholder when loading rich editor

* fix: Cache bust on auto reload

webpack.config.dev.js

@@ -10,6 +10,9 @@ const developmentWebpackConfig = Object.assign(commonWebpackConfig, {
     "webpack-hot-middleware/client",
     "./app/index",
   ],
+  optimization: {
+    usedExports: true,
+  },
 });
 
 developmentWebpackConfig.plugins = [