Use Supersized for web gallery

Use the Supersized framework for the web gallery - based on jQuery.

Functionality:
 * Scale images to browser window
 * Image click loads full size image in separate window
 * Thumbnail bar (default hidden)
 * Slideshow (isn't auto started)
 * Progress bar (isn't shown)

The control bar is enabled, but can be commented out in the HTML if necessary. Slideshow auto start could be enabled then.

Supersized:
  http://buildinternet.com/project/supersized/
  http://github.com/buildinternet/supersized/

Supersized is dual licensed under MIT and GPL.