Got rid of grouping files and classes in project view when they appear on the same level.

idea/src/org/jetbrains/jet/plugin/projectView/JetClassOrObjectTreeNode.java

@@ -83,4 +83,9 @@ public class JetClassOrObjectTreeNode extends AbstractPsiBasedNode<JetClassOrObj
 
         return super.canRepresent(element) || canRepresentPsiElement(getValue(), element, getSettings());
     }
+
+    @Override
+    public int getWeight() {
+        return 20;
+    }
 }