Instant mining pool identification from recent blocks.

refs #59

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

@@ -70,7 +70,7 @@
               </ng-template>
               <tr>
                 <td>Miner</td>
-                <td><app-miner [coinbaseTransaction]="transactions && transactions[0]"></app-miner></td>
+                <td><app-miner [coinbaseTransaction]="block.coinbaseTx || (transactions && transactions[0])"></app-miner></td>
               </tr>
             </tbody>
           </table>

frontend/src/app/interfaces/electrs.interface.ts

@@ -92,6 +92,7 @@ export interface Block {
   medianFee?: number;
   feeRange?: number[];
   reward?: number;
+  coinbaseTx?: Transaction;
 }
 
 export interface Address {

frontend/src/app/pipes/miner/miner.component.ts

@@ -19,6 +19,7 @@ export class MinerComponent implements OnChanges {
   ) { }
 
   ngOnChanges() {
+    this.miner = '';
     this.loading = true;
     this.findMinerFromCoinbase();
   }