Do not use CDN for jQuery and Prototype.

[adunkman]

/cc @harvesthq/chosen-developers as an FYI, but I’m just going to merge this to get the build fixed.

We’re having issues in CI loading these files from ajax.googleapis.com, so let’s load them locally instead of from a CDN. Here’s an example of the build failure:

Running "jasmine:jquery" (jasmine) task
Testing Jasmine specs via PhantomJS
>> ReferenceError: Can't find variable: jQuery at
>> public/chosen.jquery.js:606
 Basic setup
   - should add chosen to jQuery object......X
     ReferenceError: Can't find variable: jQuery in file:///home/travis/build/harvesthq/chosen/spec/public/jquery_specs.js (line 4) (1)
   - should create very basic chosen......X
     ReferenceError: Can't find variable: $ in file:///home/travis/build/harvesthq/chosen/spec/public/jquery_specs.js (line 9) (1)
…