activate complete SessionElementTracker_test

(doesn't pass yet -- missing sesison initialisation)

src/proc/mobject/session/session-impl.cpp

@@ -71,8 +71,7 @@ namespace session {
   bool 
   SessionImpl::isValid ()
   {
-    UNIMPLEMENTED ("session self test");
-    return false; // TODO
+    return true;          //////////////////////////////////////////////////////////////////////////TICKET #694
   }
   
   

tests/components/proc/mobject/session/session-element-tracker-test.cpp

@@ -109,7 +109,7 @@ namespace test    {
       run (Arg) 
         {
           verify_trackingMechanism();
-//        verify_integration();        ///////////////////////////////////////////TICKET #571
+          verify_integration();
         }