put back backup warning controller

src/js/controllers/onboarding/backupWarning.js

@@ -0,0 +1,55 @@
+'use strict';
+
+angular.module('copayApp.controllers').controller('backupWarningController', function($scope, $state, $timeout, $stateParams, $ionicModal) {
+
+  if ($stateParams.from == 'onboarding') {
+    $scope.bchWalletId = $stateParams.bchWalletId;
+    $scope.btcWalletId = $stateParams.btcWalletId;
+    $scope.fromState = $stateParams.from + '.backupRequest' ;
+  } else {
+    $scope.walletId = $stateParams.walletId;
+    $scope.fromState = $stateParams.from;
+  }
+
+  $scope.toState = $stateParams.from + '.backup';
+
+  $scope.openPopup = function() {
+    $ionicModal.fromTemplateUrl('views/includes/screenshotWarningModal.html', {
+      scope: $scope,
+      backdropClickToClose: true,
+      hardwareBackButtonClose: true
+    }).then(function(modal) {
+      $scope.warningModal = modal;
+      $scope.warningModal.show();
+    });
+
+    $scope.close = function() {
+      $scope.warningModal.remove();
+      $timeout(function() {
+        if ($stateParams.from == 'onboarding') {
+          $state.go($scope.toState, {
+            bchWalletId: $scope.bchWalletId,
+            btcWalletId: $scope.btcWalletId
+          });
+        } else {
+          $state.go($scope.toState, {
+            walletId: $scope.walletId
+          });
+        }
+      }, 200);
+    };
+  }
+
+  $scope.goBack = function() {
+    if ($stateParams.from == 'onboarding') {
+      $state.go($scope.fromState, {
+        bchWalletId: $scope.bchWalletId,
+        btcWalletId: $scope.btcWalletId
+      });
+    } else {
+      $state.go($scope.fromState, {
+        walletId: $scope.walletId
+      });
+    }
+  };
+});