Alpha-2 release. Changelog:

* GUI: TreeView (New)
* GUI: IconView refactor
* GUI: ListView refactor
* GUI: MenuBar updates
* GUI: _DataView base class for *View GUI classes
* Dialogs: Bugfixes
* Dialogs: FileView now has contextmenu for switching views
* Core: Bugfix - Keypress bubbling
* Core: Windows can now request "attention" (w/effects)
* Core: Window now has _setIcon()
* Core: Window _focus() now always fires
* Core: Rewrote some handling code
* Core: Handler now has an attached PackageManager
* CoreWM: Desktop icon view (configurable)
* CoreWM: Panel autohide and transition effects
* CoreWM: Bugfixes
* CoreWM: New code for initial window positioning
* CoreWM: Upload file on drop on desktop
* Backend: Some fixes for Application API calls
* Libs: AjaxUpload bugfixes
* VFS: Now using virtual paths in frontend
* Misc: Minimization/Compression support
* Themes: New theme and lessc support
* Applications: Bugfixes and updates
* Nodejs server updates

Bugfixes, Cleanups, improvements and updated documentation