Partial implementation of https://spagobi.eng.it/jira/browse/SPAGOBI-1404: Ambiguous paths between entities

git-svn-id: svn://svn.forge.objectweb.org/svnroot/spagobi@20828 99afaf0d-6903-0410-885a-c66a8bbb5f81
OPEN - issue SPAGOBI-1404: Ambiguous paths between entities 
https://www.spagoworld.org/jira/browse/SPAGOBI-1404

git-svn-id: svn://svn.forge.objectweb.org/svnroot/spagobi@20829 99afaf0d-6903-0410-885a-c66a8bbb5f81
added Legend control

git-svn-id: svn://svn.forge.objectweb.org/svnroot/spagobi@20830 99afaf0d-6903-0410-885a-c66a8bbb5f81