Add the stun extjs4 class

git-svn-id: svn://svn.forge.objectweb.org/svnroot/spagobi/V_4.x/Server/trunk@19817 99afaf0d-6903-0410-885a-c66a8bbb5f81
CLOSED - issue SPAGOBI-1166: As a Qbe power-user, I want to see selected fields, where clause and having clause into 3 panels in a card layout
https://www.spagoworld.org/jira/browse/SPAGOBI-1166

git-svn-id: svn://svn.forge.objectweb.org/svnroot/spagobi/V_4.x/Server/trunk@19818 99afaf0d-6903-0410-885a-c66a8bbb5f81