Ignore button clicks when post install is not yet confirmed

Angular does not remove the click handler on ng-disabled :-/

src/views/apps.js

@@ -330,6 +330,8 @@ angular.module('Application').controller('AppsController', ['$scope', '$location
         },
 
         submit: function () {
+            if (!$scope.appPostInstallConfirm.confirmed) return;
+
             $scope.appPostInstallConfirm.app.pendingPostInstallConfirmation = false;
             delete localStorage['confirmPostInstall_' + $scope.appPostInstallConfirm.app.id];