Graph x-axis date fix.

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

@@ -44,7 +44,7 @@
         </div>
         <div class="card-body">
           <div style="height: 600px;">
-            <app-mempool-graph [data]="mempoolStats"></app-mempool-graph>
+            <app-mempool-graph [data]="mempoolStats" [dateSpan]="radioGroupForm.controls.dateSpan.value"></app-mempool-graph>
           </div>
         </div>
       </div>