Fixed a bug where Desktop IE10 would be considered to support Touch events

As stated in issue #273 (4 months ago), the current Touch.isSupported method wrongly detects Desktop IE10 as supporting touch events. This is a problem since it directly causes double event dispatching and can be quite troublesome to debug if you don't know where to look.

I take no credit in this solution since it has been provided by @nickalie in issue #273 and I merely bundled it in a pull request to make it easier to merge into the project.