Upgrade from jQuery v1.11.0 to jQuery v2.1.0

Change Log
jQuery 2.1

Ajax
#14207: Ajax error defaults to status 404

Build
#13119: Make jQuery releases available via npm
#13768: Error trying to load jQuery from node.js
#14340: Remove oldIE code from support tests on master

Core
#14313: Optimize jQuery.merge for size

Event
#14544: Remove elem reference from event handler

Both the 1.x and 2.x branches of jQuery support all recent modern browsers and have the same API. The 1.x branch, adds support for the older versions of Internet Explorer (IE6, 7, and 8). The 2.x branch, 2.1.0, adds support for non-traditional web environments like node.js and browser plugins for Chrome and Firefox.