modified the alias of the entity in the relation wizard 

git-svn-id: svn://svn.forge.objectweb.org/svnroot/spagobi@21253 99afaf0d-6903-0410-885a-c66a8bbb5f81
Bug fix: infinite loop

git-svn-id: svn://svn.forge.objectweb.org/svnroot/spagobi@21254 99afaf0d-6903-0410-885a-c66a8bbb5f81
bug fix: clean the roles selection if there is no ambiguos fields

git-svn-id: svn://svn.forge.objectweb.org/svnroot/spagobi@21255 99afaf0d-6903-0410-885a-c66a8bbb5f81
bug fix: clean the roles selection if there is no ambiguos fields

git-svn-id: svn://svn.forge.objectweb.org/svnroot/spagobi@21256 99afaf0d-6903-0410-885a-c66a8bbb5f81