Update jQuery to latest version

It’s now 2014, and jQuery 1.3.2 was released in 2009. We’re moving on to the latest version of jQuery 1.x to keep with the support of IE6+ (for now).

References to the old jquery-1.3.2.js file have been changed to jquery-1.11.1.js in ``plugins/content-form/content.php``, ``templates/page.html``, and ``templates/project.html``. The old jquery-1.3.2.js file has been removed.