interface changes

added new data-strcutures for new sensors
new helper methods
fixed some issues

grid/walk/v2/modules/WalkModuleActivityControl.h

@@ -100,7 +100,7 @@ public:
 //				if (potentialNode.getType() == GridNode::TYPE_FLOOR)	{return kappa;}
 //																		{return 1-kappa;}
 			default:
-				throw Exception("not yet implemented");
+			    throw Exception("not yet implemented activity within WalkModuleActivityControl::getProbability");
 		}
 
 	}