Perform deep object verification on bitpayAccounts-v2. Ensure that nextStep for bitpay card is visible when no cards are cached.

src/js/controllers/tab-home.js

@@ -289,6 +289,8 @@ angular.module('copayApp.controllers').controller('tabHomeController',
         if (err) return;
         if (lodash.isEmpty(data)) {
           $scope.bitpayCards = null;
+          // Ensure next step for cards is visible
+          storageService.setNextStep('BitpayCard', 'false', function(err) {});
           return;
         }
         $scope.bitpayCards = data;