Add toggle button to dropdown menu.

Revert left margin from tv page.
Change text dropdown filter to icon.
Change dropdown inactive item color.
Revert 500 limit rate.

frontend/src/app/components/statistics/statistics.component.ts

@@ -25,7 +25,8 @@ export class StatisticsComponent implements OnInit {
   spinnerLoading = false;
   feeLevels = feeLevels;
   chartColors = chartColors;
-  filterFeeIndex = 200;
+  filterFeeIndex = 500;
+  dropDownOpen = false;
 
   mempoolStats: OptimizedMempoolStats[] = [];
 
@@ -143,4 +144,8 @@ export class StatisticsComponent implements OnInit {
   filterFees(index: number) {
     this.filterFeeIndex = index;
   }
+
+  filterClick() {
+    this.dropDownOpen = !this.dropDownOpen;
+  }
 }