1.6.4.11 released

Fix the Image map converter which was not working because it had a dependency on MDIUtilities
Fix the image map converter trees not being scrollable
Fix the show Definition of an image Area in the Image map converter which did not open correctly the image element in XML
Avoid to write the path of the article file for the reference at the beginning of a reference if the reference is in the origin article
Fix the writing of ImageMap elements references
Fix the y position of the areas in the ImageMap elements which could be incorrect
Add a function in the image map converter to update an existing image map definition