jquery.client: Detect Internet Explorer 11

It only admits it's using Trident, the browser name is not in the UA.

Side-effects: detects Trident's version for IE10 as well, detect WOW64
as Windows.

Also minor code consistency changes.

Bug: 50873
Change-Id: I79d65548e90d2c98c4e1d3253ac432801f48b4ba
Merge "jquery.client: Detect Internet Explorer 11"