Adds buttons for each GrapghicalElement,
The Orientation and Image elements display a default image on creation.
The graphicalElement can be moved with the mouse.
Simplification and documentation of the UIController class.
Few corrections for the ConfigurationAttributes.
Simplification of the display of the configurationShutter : when elements are selected, the UIController sends to the ConfigurationShutter only the ConfigurationAttribute in common. So the function getCommon and the clone constructor are remove from the GE.