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

app/components/DelayedMount.js

@@ -6,7 +6,7 @@ type Props = {
   children: React.Node,
 };
 
-export default function DelayedMount({ delay = 150, children }: Props) {
+export default function DelayedMount({ delay = 250, children }: Props) {
   const [isShowing, setShowing] = React.useState(false);
 
   React.useEffect(() => {