* Saver: removed the temporary hack to fix BioFormats save.
* Importer: fixed a minor issue with file path on Bio-Format importer.
* ROI:
 - fixed a issue with ROI subtraction operation.
 - fixed a issue with ROI2DShape intersects() method.
 - fixed issues with empty ROI2DArea.
* Rectangle5D: fixed infinite size C report.
* XMLUtil: added filterString(..) method to filter incorrect character.
* VTK:
 - fixed some VTK crashes due to multi thread access (even if
protected).
 - added lock() / unlock() method to require access to VTK rendering.
 - added access to VTK properties and actors (activeCam, axes, bounding
box, ruler, image volume...)
 - added pick(..) method for 3D picking.
* minor change in plugin class loader for better handling on thread
context class loader.
* others minors changes.
* some cleanup.
* some javadoc updates.