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/theme/components/baMenu/baMenu.service.ts

@@ -1,5 +1,5 @@
 import {Injectable} from '@angular/core';
-import {Router, UrlTree, RouterConfig} from '@angular/router';
+import {Router, Routes} from '@angular/router';
 
 @Injectable()
 export class BaMenuService {
@@ -9,7 +9,7 @@ export class BaMenuService {
   constructor(private _router:Router) {
   }
 
-  public convertRoutesToMenus(routes:RouterConfig):any[] {
+  public convertRoutesToMenus(routes:Routes):any[] {
     let items = this._convertArrayToItems(routes);
     return this._skipEmpty(items);
   }