Fix Secure API hangs (#3927)

* Use proxy for WS in dev

* Update SecureAPI

* Update webpack config

* Fix dev contract

* Update webpack

* Linting fixes

* Refactor Secure API logic : Promise based, no wastes of req

* Fix tests

* Add try 'intitial' token

js/src/ui/BlockStatus/blockStatus.js

@@ -62,9 +62,17 @@ class BlockStatus extends Component {
       );
     }
 
+    let syncStatus = null;
+
+    if (syncing && syncing.currentBlock && syncing.highestBlock) {
+      syncStatus = (
+        <span>{ syncing.currentBlock.toFormat() }/{ syncing.highestBlock.toFormat() } syncing</span>
+      );
+    }
+
     return (
       <div className={ styles.syncStatus }>
-        <span>{ syncing.currentBlock.toFormat() }/{ syncing.highestBlock.toFormat() } syncing</span>
+        { syncStatus }
         { warpStatus }
       </div>
     );