NA-574 Grouping apps by type

    const data = this.root; // || this.props.displayedScenario;

    this.root = d3.hierarchy(data, getScenarioNodeChildren);

    this.nodes = this.root.descendants();

    const compareTypes = (a, b)  => {

      return a.data.type < b.data.type;

    };

    this.nodes = this.root.descendants().sort(compareTypes);

    copyAttributesRecursive(data)(this.root);

    let tree = d3.tree().size([this.props.height, this.props.width - 100]);

    let cluster = d3.cluster().size([this.props.height, this.props.width - 100]);

    clusterFlip(tree)(this.root);

  }