implemented editable help

src/app/models/help.model.spec.ts

@@ -0,0 +1,7 @@
+import { HelpModel } from './help.model';
+
+describe('Help.Model', () => {
+  it('should create an instance', () => {
+    expect(new HelpModel()).toBeTruthy();
+  });
+});

src/app/models/help.model.ts

@@ -0,0 +1,6 @@
+import {BaseModel} from './base.model';
+
+export class HelpModel extends BaseModel {
+  text = '';
+  level = 'none';
+}