code: function _deleteIgnoreCase(obj, key) {
       key = key.toLowerCase();
       for (var p in obj) {
           if (obj.hasOwnProperty(p) && key == p.toLowerCase()) {
               delete obj[p];
               return true;
           }
       }
       return false;
   }
docs: Returns a javascript object, case insensitive for key property
  
  @method private_setIgnoreCase
  @param obj (object)  the object to search
  @param key (string) the new or existing property name
  @return (bool) true if successful, false if not
  @private