added sorting to management pages

src-ui/src/app/directives/sortable.directive.spec.ts

@@ -0,0 +1,8 @@
+import { SortableDirective } from './sortable.directive';
+
+describe('SortableDirective', () => {
+  it('should create an instance', () => {
+    const directive = new SortableDirective();
+    expect(directive).toBeTruthy();
+  });
+});