Applied patch by Terna S.p.A. to hide null values on the chart (not more forced to 0)

git-svn-id: svn://svn.forge.objectweb.org/svnroot/spagobi@21634 99afaf0d-6903-0410-885a-c66a8bbb5f81
Applied patch by Terna S.p.A. to hide null values on the chart (not more forced to 0)

git-svn-id: svn://svn.forge.objectweb.org/svnroot/spagobi@21635 99afaf0d-6903-0410-885a-c66a8bbb5f81


git-svn-id: svn://svn.forge.objectweb.org/svnroot/spagobi@21636 99afaf0d-6903-0410-885a-c66a8bbb5f81


git-svn-id: svn://svn.forge.objectweb.org/svnroot/spagobi@21637 99afaf0d-6903-0410-885a-c66a8bbb5f81


git-svn-id: svn://svn.forge.objectweb.org/svnroot/spagobi@21638 99afaf0d-6903-0410-885a-c66a8bbb5f81