Add checkbox to skip backup for app update

src/js/client.js

@@ -479,9 +479,10 @@ angular.module('Application').service('Client', ['$http', '$interval', '$timeout
         });
     };
 
-    Client.prototype.updateApp = function (id, manifest, callback) {
+    Client.prototype.updateApp = function (id, manifest, options, callback) {
         var data =  {
-            appStoreId: manifest.id + '@' + manifest.version
+            appStoreId: manifest.id + '@' + manifest.version,
+            skipBackup: !!options.skipBackup
         };
 
         post('/api/v1/apps/' + id + '/update', data, null, function (error, data, status) {

src/views/app.html

@@ -180,6 +180,10 @@
         <div ng-bind-html="config.update.apps[app.id].manifest.changelog | markdown2html"></div>
       </div>
       <div class="modal-footer">
+          <label class="checkbox-inline pull-left">
+              <input type="checkbox" ng-model="updates.skipBackup"><b>Skip backup</b>
+          </label>
+
         <button type="button" class="btn btn-default" data-dismiss="modal">Cancel</button>
         <button type="button" class="btn btn-success" ng-click="updates.confirmUpdate()" ng-disabled="updates.busyUpdate"><i class="fa fa-circle-notch fa-spin" ng-show="updates.busyUpdate"></i> Update</button>
       </div>

src/views/app.js

@@ -497,6 +497,7 @@ angular.module('Application').controller('AppController', ['$scope', '$location'
         busy: false,
         busyCheck: false,
         busyUpdate: false,
+        skipBackup: false,
 
         enableAutomaticUpdate: false,
 
@@ -537,7 +538,7 @@ angular.module('Application').controller('AppController', ['$scope', '$location'
         confirmUpdate: function () {
             $scope.updates.busyUpdate = true;
 
-            Client.updateApp($scope.app.id, $scope.config.update.apps[$scope.app.id].manifest, function (error) {
+            Client.updateApp($scope.app.id, $scope.config.update.apps[$scope.app.id].manifest, { skipBackup: $scope.updates.skipBackup }, function (error) {
                 $scope.updates.busyUpdate = false;
                 if (error) return Client.error(error);