ref(ui): Codesplit "crypto-js/md5" (#7221)

This is only used for gravatars in `<Avatar>`

src/sentry/static/sentry/app/components/avatar/gravatar.jsx

@@ -52,8 +52,7 @@ class Gravatar extends React.Component {
       s: remoteSize || undefined,
       // If gravatar is not found we need the request to return an error,
       // otherwise error handler will not trigger and avatar will not have a display a LetterAvatar backup.
-      d: placeholder || '404', 
-     
+      d: placeholder || '404',
     };
 
     url += '?' + qs.stringify(query);

webpack.config.js

@@ -54,7 +54,6 @@ var appEntry = {
     'bootstrap/js/tooltip',
     'bootstrap/js/alert',
     'create-react-class',
-    'crypto-js/md5',
     'jed',
     'jquery',
     'marked',