Fixed a known bug.

src/app/service/monitoring.service.ts

@@ -48,8 +48,8 @@ export class MonitoringService {
     var end_date = new Date();
 
     // for testing
-    // start_date = new Date(1575331200000);
-    // var end_date = new Date(1575763200000);
+    start_date = new Date(1575331200000);
+    var end_date = new Date(1575763200000);
 
     this.global_range_dates = [ start_date, end_date ];
 
@@ -348,10 +348,11 @@ export class MonitoringService {
     var displays = this.appConfig.getConfig().PartitionConfig[partition]["displays"];
     if ( displays.length > 1 ) {
       var displays_top: string[] = this.appConfig.getConfig().DefaultTimelinesTop;
-      // remove first item from displays
-      displays.shift();
       // combine default displays and additional displays
       displays = displays_top.concat(displays);
+      // remove "DefaultTimelinesTop" from displays
+      var j = displays_top.length;
+      displays.splice(j,1);
     } else {
       displays = this.appConfig.getConfig().DefaultTimelinesTop;
     }