Switch to home when scan from anywhere

lib/home.dart

@@ -283,6 +283,7 @@ class _HomeScreenState extends State<HomeScreen> {
     if (barcode != null) {
       this._outputPubkey.text = barcode;
       isPubkey(barcode);
+      onTabTapped(0);
     }
     return barcode;
   }

lib/ui/generateWallets.dart

@@ -77,9 +77,6 @@ class _GenerateWalletScreen extends State<GenerateWalletScreen> {
       );
     }
 
-    // setState(() {
-    //   this._mnemonic.text = generatedMnemonic;
-    // });
     generateWallet(generatedMnemonic);
   }