Finished jQuery library updates, current for 2013/02/12.

- jquery.js  1.9.1 (2013/02/04)
- jquery.cookie.js  1.3.1 (2013/01/30)
- jquery.scrollTo.js  1.4.5 (2012/12/14)
- jquery.localScroll.js  1.2.8b (2012/09/21)
- json2.js (2012/10/08)

Note: jquery.jeditable.js and jquery.MultiFile.js still removed, as they are no longer used.