feat(rc5): update to angular rc.5

- NgaModule - module wrapper for all ng2-admin custom features
- Ng Module per page
- async components load
- menu moved (again) to a separate file (as now each module has its own route file)
- no need to import Ba* directives into the pages which have NgaModule in the import statement

src/app/pages/forms/forms.routing.ts

@@ -0,0 +1,19 @@
+import { Routes, RouterModule }  from '@angular/router';
+
+import { Forms } from './forms.component';
+import { Inputs } from './components/inputs/inputs.component';
+import { Layouts } from './components/layouts/layouts.component';
+
+// noinspection TypeScriptValidateTypes
+const routes: Routes = [
+  {
+    path: '',
+    component: Forms,
+    children: [
+      { path: 'inputs', component: Inputs },
+      { path: 'layouts', component: Layouts }
+    ]
+  }
+];
+
+export const routing = RouterModule.forChild(routes);