you'll need to update RequireJS config within this file:

https://github.com/twitter/ambrose/blob/master/common/src/main/resources/web/js/require-config.js

to add an entry for jQueryUI, so RequireJS knows where to find it.

Something like this:

```
   shim: {
    'lib/jquery': { exports: 'jQuery' },
    'lib/jquery-lib': { deps: ['lib/jquery'], exports: 'jQuery' },
    ...
  }
```