Ad-hoc reporting and self-service BI starting from a dataset and using Qbe: implemented scenario when starting from a normal dataset (i.e. not persisted and not flat)

git-svn-id: svn://svn.forge.objectweb.org/svnroot/spagobi/V_4.x/Server/trunk@20582 99afaf0d-6903-0410-885a-c66a8bbb5f81