Add version tag in HTML, fix lint error.

web/src/components/measure-summaries/simple-summary-graph.ts

@@ -16,7 +16,7 @@ export class SimpleSummaryGraph extends Vue {
   };
 
   private get measurementData(): ApexAxisChartSeries {
-    let measurementData = this.measurements.slice() || [];
+    const measurementData = this.measurements.slice() || [];
 
     return [{
       name: this.measure.name,