Add block fee rate percentiles chart

frontend/src/app/components/block-rewards-graph/block-rewards-graph.component.html

@@ -44,21 +44,4 @@
     <div class="spinner-border text-light"></div>
   </div>
 
-</div>
-
-<ng-template #loadingStats>
-  <div class="pool-distribution">
-    <div class="item">
-      <h5 class="card-title" i18n="mining.miners-luck">Hashrate</h5>
-      <p class="card-text">
-        <span class="skeleton-loader skeleton-loader-big"></span>
-      </p>
-    </div>
-    <div class="item">
-      <h5 class="card-title" i18n="master-page.blocks">Difficulty</h5>
-      <p class="card-text">
-        <span class="skeleton-loader skeleton-loader-big"></span>
-      </p>
-    </div>
-  </div>
-</ng-template>
+</div>

frontend/src/app/components/block-rewards-graph/block-rewards-graph.component.ts

@@ -149,8 +149,12 @@ export class BlockRewardsGraphComponent implements OnInit {
             }
           },
           splitLine: {
-            show: false,
-          }
+            lineStyle: {
+              type: 'dotted',
+              color: '#ffffff66',
+              opacity: 0.25,
+            }
+          },
         },
       ],
       series: [