Update to jQuery 1.7.1 and jQueryUI 1.8.16

[vipsoft]

Note: there are potential compat busters re: .data, .attr, .prop, and .removeProp. See changelog for more info.

[vipsoft]

Done. Regression testing before I commit to trunk.

[vipsoft]

(In [5357]) fixes #2397

• update to jQuery 1.6.4
  •  http://blog.jquery.com/2010/10/16/jquery-143-released/
  •  http://blog.jquery.com/2010/11/11/jquery-1-4-4-release-notes/
  •  http://blog.jquery.com/2011/01/31/jquery-15-released/
  •  http://blog.jquery.com/2011/02/24/jquery-151-released/
  •  http://blog.jquery.com/2011/03/31/jquery-152-released/
  •  http://blog.jquery.com/2011/05/03/jquery-16-released/
  •  http://blog.jquery.com/2011/05/12/jquery-1-6-1-released/
  •  http://blog.jquery.com/2011/06/30/jquery-162-released/
  •  http://blog.jquery.com/2011/09/01/jquery-1-6-3-released/
  •  http://blog.jquery.com/2011/09/12/jquery-1-6-4-released/
• update to jQuery UI 1.8.16
  •  http://blog.jqueryui.com/2011/05/jquery-ui-1-8-13/
  •  http://blog.jqueryui.com/2011/06/jquery-ui-1-8-14/
  •  http://blog.jqueryui.com/2011/08/jquery-ui-1-8-15/
  •  http://blog.jqueryui.com/2011/08/jquery-ui-1-8-16/

[vipsoft]

(In [5403]) refs #2397 - updating to jQuery 1.7 and event API changes

[vipsoft]

(In [5664]) refs #2397

[vipsoft]

(In [5669]) refs #2397

[vipsoft]

(In [5670]) refs #2397 - bump version in config file

[vipsoft]

(In [5711]) refs #2397 - replace jquery-ui 1.8.17 from CDN, with jquery-ui 1.8.17 from download package which has a more recent timestamp and appears to have been minified differently; and it has the trailing semicolon

[vipsoft]

(In [5771]) refs #2397, refs #2909 - rollback to jquery-ui.js 1.8.16; 1.8.17 introduced a drag & drop regression