Fix viewport resizing behaviour on layout change

OHIFViewer-react/src/FlexboxLayout/ConnectedCornerstoneViewport.js

@@ -8,6 +8,7 @@ const mapStateToProps = state => {
     const activeButton = state.tools.buttons.find(tool => tool.active === true);
 
     return {
+        layout: state.viewports.layout,
         activeViewportIndex: state.viewports.activeViewportIndex,
         activeTool: activeButton && activeButton.command
     };

OHIFViewer-react/src/FlexboxLayout/ViewerMain.js

@@ -118,7 +118,6 @@ class ViewerMain extends Component {
     }
 
     render() {
-        // TODO: Connect LayoutManager to redux
         return (
             <div className="ViewerMain">
                 <ConnectedLayoutManager viewportData={this.state.viewportData} setViewportData={this.setViewportData}/>