Change Carousel to not use the shadow dom
Fixed error DatePicker tests fail with UTC+1. Project migrated to Dart SDK 1.4.2
Prepare to 0.5.0 release
Added Sortable component stub.

Refactored to move generic behavior of Draggable and Droppable to a parent class

Refactorig of Sortable to share code with Draggable and Droppable using the same abstract classes
Added sortable zones.
Name refactoring
Added drop on parent element when the list is empty
Changed default Drag&Drop behaviour: now it is mandatory to declare a drop zone, otherwise, by default, the dragged object cannot be dropped
Added first unit test for sortable
Added sortable tests
Removed need for nodeId in the sortable service
A light in the dark... Complete refactoring of the Drag&Drop and Sortable code. A change in the code structure permitted to greatly simplify the code.
The Sortable component works almost fine in dart but still behaves wrongly in when compiled to js (tested in FF, Chrome and Opera).
Commented failing tests
Ignoring eclipse settings folder