Corrects the rotation of the graphicalElements displayed.
Fix the selection of the Ows-context for the MapImage GraphicalElement (the JComboBox was always disabled).
Fix the align action (laft, right, top, bottom) to align the CompositionJPanel and not the GraphicalElements.
Adds the rotation to the MapImageRenderer.
Fix the GraphicalElement position on dragging it.
Adds a new way to resize an element in the COmpositionArea. So there is to way :
- By resizing with the mouse : resize directly the GraphicalElement. Fast and usefull when the GE ratation angle is 0°. But useless when the angle is diferent from 0.
- By holding the AltGr key and resizing with the mouse : resize the representation (the CompositionJPanel) corresponding to the GE. The CompositionJPanel will takes the new dimension and the GraphicalElement will be adapt to fit inside the rectangle. But still some minor bug to fix (Sometimes 1 pixels too widie or too short)
Adds a third way to resize an element in the CompositionArea : by holding the Shift key an resizing with the mouse, the GraphicalElement will keep the ratio width/height.
On loading an image in an Image GraphicalElement, it is scaled to the GE size and not crop.
On loading an image in an Orientation GraphicalElement, it is scaled to the GE size and not crop.
On loading an map in an MapImage GraphicalElement, it is scaled to the GE size and not crop,
Now the MapTransform is using as extent and image size the envelop of the MapContext.
Few corrections (comments, unused import ...) before the pull request.
Fixes the size of the BufferedImage set in the MapTransform in the MapImage GE.
Merge pull request #24 from SPalominos/UIImprovement

Fixes the rotation of the GraphicalElements displayed in the CompositionArea,
Fixes the align action to align the CompositionJPanel and not the GraphicalElement,
Fixes the selection of an ows-context,
The GraphicalElement follows the mouse when it's dragged,
The images loaded in different GraphicalElement are scaled to the GrapphicalElement size and not cut

Now there are three ways to resize with the mouse a GraphicalElement : 
* By resizing with the mouse : resize directly the GraphicalElement. Fast and useful when the GE rotation angle is 0°. But useless when the angle is different from 0.
* By holding the AltGr key and resizing with the mouse : resize the representation (the CompositionJPanel) corresponding to the GE. The CompositionJPanel will take the new dimension and the GraphicalElement will be adapted to fit inside the rectangle. But still some minor bug to fix (Sometimes 1 pixels too wide or too short)
* By holding the Shift key and resizing with the mouse, the GraphicalElement will keep the ratio width/height.