fix schema not loaded

frontend/app/work_packages/controllers/work-package-details-controller.js

@@ -64,10 +64,14 @@ module.exports = function($scope,
       .then(function(workPackage) {
         setWorkPackageScopeProperties(workPackage);
         WorkPackageService.loadWorkPackageForm(workPackage).then(function() {
+          return workPackage.links.schema.fetch().then(function(response) {
+            workPackage.schema = response;
             if (callback) {
               callback(workPackage);
             }
           });
+
+        });
       });
   }
   $scope.refreshWorkPackage = refreshWorkPackage; // expose to child controllers