Updated qooxdoo’s maintenance and stable version to 3.5.1 and 4.0 [author]

Source taken form http://qooxdoo.org/downloads/qx.website

Direct links:
3.5.1: http://demo.qooxdoo.org/3.5.1/framework/q-3.5.1.js
3.5.1 min: http://demo.qooxdoo.org/3.5.1/framework/q-3.5.1.min.js
3.5.1 indigo: http://demo.qooxdoo.org/3.5.1/framework/indigo-3.5.1.css

4.0: http://demo.qooxdoo.org/4.0/framework/q-4.0.js
4.0 min: http://demo.qooxdoo.org/4.0/framework/q-4.0.min.js
4.0 indigo: http://demo.qooxdoo.org/4.0/framework/indigo-4.0.css