Change mouse cursor indicator during loading of a web page in Chrome 33 and later branches

```
Since Chrome 33 web pages do not show "loading cursor" in Google Chrome, it is 
Aura UI bug. 

Change cursor icon in OnLoadingStateChange. See SetCursor and LoadCursor on 
MSDN pages.
```

Original issue reported on code.google.com by `czarek.t...@gmail.com` on 28 Nov 2014 at 11:32
