[4.1] 'Ext.app.Controller.addRef - modify to accept arrays

[LesJ]

The public (but undocumented) Ext.app.Controller.addRef method currently accepts a single reference object, but it could also accept an array of such references by not converting the ref param to an array. There's no need to convert the param to an array since the ref method will do this conversion by calling Ext.Array.from(refs).

Ext.define('Ext.app.Controller', {
    ....
    ref: function(refs) {
        refs = Ext.Array.from(refs);
        
        ...
    },

    addRef: function(ref) {
        return this.ref([ref]); // <-- skip [] around ref and rename ref to refs
    },
    ....

EDIT
Also, the addRef method should not return this.ref since the ref method doesn't return a value, so just skip return. Basically, addRef would be an alias for the ref method

[mitchellsimoens]

Thanks for the report.