Get the table descriptor from the structure of the db

git-svn-id: svn://svn.forge.objectweb.org/svnroot/spagobi/V_4.x/Server/trunk@22931 99afaf0d-6903-0410-885a-c66a8bbb5f81
Removed temporary class for Foodmart example

git-svn-id: svn://svn.forge.objectweb.org/svnroot/spagobi/V_4.x/Server/trunk@22932 99afaf0d-6903-0410-885a-c66a8bbb5f81
git-svn-id: svn://svn.forge.objectweb.org/svnroot/spagobi/V_4.x/Server/trunk@22933 99afaf0d-6903-0410-885a-c66a8bbb5f81
Undo button is enabled only in case there are pending transformations, otherwise it is disabled

git-svn-id: svn://svn.forge.objectweb.org/svnroot/spagobi/V_4.x/Server/trunk@22934 99afaf0d-6903-0410-885a-c66a8bbb5f81