Common reorg (#8025)

* Re-organize common folder

* fix: Correct paths in tests

* fix: move new content to proper folder

* chore: Move audio folder to assets

* Move sprites to sprites assets directory

* Move css sprites to assets directory

* Split out readmes for common code and sprites

* Move images to assets directory

* Move destinatin of shared browserified file

* remove unused file

* move compiled js to client-old

* Fix karma tests

* fix: Correct paths for sprites

website/common/script/content/appearance/hair/index.js

@@ -0,0 +1,15 @@
+import bangs from './bangs.js';
+import base from './base.js';
+import beard from './beard.js';
+import color from './color.js';
+import flower from './flower.js';
+import mustache from './mustache.js';
+
+module.exports = {
+  color,
+  base,
+  bangs,
+  flower,
+  beard,
+  mustache,
+};