Disable Chosen on all Mobile devices

Previously, only iPhone/iPod and Android devices with `Mobile` in the userAgent string were disabled.

But as noted in #1848 there are (obviously) more mobile devices with different userAgent strings. But all of them include `Mobile` in it. 

With the possible exception for BlackBerry. So maybe the regex should be `/Mobile|BlackBerry/i`.

@harvesthq/chosen-developers What do you guys think?