bundle into single js file!

- remove external css - ensure bulma styles don't rely on html, body
- move logo.svg to be loaded inline
- rename scss -> assets
- remove wombat/wombatWorkers, bundled via raw-loader and sw.js

index.html

@@ -2,7 +2,7 @@
 <html class="no-overflow">
 <head>
 <script src="./dist/frontend.js"></script>
-<link href="./dist/frontend.css" rel="stylesheet"/>
+<!--<link href="./dist/frontend.css" rel="stylesheet"/>-->
 </head>
 <body>
 <app-main></app-main>