* Zeitgeist is the foundation of our vision for an Open, Extendable Analytics Platform: Piwik 2.
* This is the default theme for Piwik 2 from which other themes automatically inherit.
* Plugins do not need a PluginName.php class anymore: plugin can be just a theme! (a json file + less/css/templates overloads)
* Displaying themes Zeitgeist and PleineLune in the Themes listing