add the trigger action to the combobox

git-svn-id: svn://svn.forge.objectweb.org/svnroot/spagobi/V_4.x/Server/trunk@19953 99afaf0d-6903-0410-885a-c66a8bbb5f81
Inject in the engine execution url the default datasource of the engine

git-svn-id: svn://svn.forge.objectweb.org/svnroot/spagobi/V_4.x/Server/trunk@19954 99afaf0d-6903-0410-885a-c66a8bbb5f81