Round up fee estimations

frontend/src/app/components/fees-box/fees-box.component.ts

@@ -62,7 +62,7 @@ export class FeesBoxComponent implements OnInit {
       const multiplier = (pBlock.blockVSize - 500000) / 500000;
       return Math.max(Math.round(useFee * multiplier), this.defaultFee);
     }
-    return Math.round(useFee);
+    return Math.ceil(useFee);
   }
 
 }