Add a function to Toggle (groop N - state isNone)

[outgoing]

Could you add a toggle can disable it if a group of 1 or more.
My implementation

UIToggle.cs
-----------

1. public bool isNone;
2. public bool value
3.         {
4.                 get { return mIsActive; }
5.                 set { if (group == 0 || value || optionCanBeNone || !mStarted||isNone ) Set(value);}
6.         }
7.  

UIToggleInspector.cs
----------

1. public override void OnInspectorGUI ()
2.         {
3. .....
4.              NGUIEditorTools.DrawProperty("Starting State", serializedObject, "startsActive");
5.              NGUIEditorTools.SetLabelWidth(100f);
6.              NGUIEditorTools.DrawProperty("IsNone", serializedObject, "isNone");
7.              NGUIEditorTools.SetLabelWidth(80f);
8. ......
9.        }
10.  

Сan be written is not entirely correct, but like works 

Sorry for my English, I use a translator