update ng2-bootstrap

Author: borysn

frontend/src/app/app.module.ts

@@ -3,8 +3,7 @@ import { LocationStrategy, HashLocationStrategy, APP_BASE_HREF } from '@angular/
 import { BrowserModule } from '@angular/platform-browser';
 import { FormsModule, ReactiveFormsModule } from '@angular/forms';
 import { HttpModule } from '@angular/http';
-import { AlertModule, DatepickerModule } from 'ng2-bootstrap/ng2-bootstrap';
-
+import { AlertModule, DatepickerModule } from 'ng2-bootstrap';
 import { routing, appRouterProviders } from './app.routing';
 import { AppComponent } from './app.component';
 import { HelloComponent } from './hello/hello.component';
@@ -20,8 +19,8 @@ import { HomeComponent } from './home/home.component';
               FormsModule,
               ReactiveFormsModule,
               HttpModule,
-              AlertModule,
-              DatepickerModule,
+              AlertModule.forRoot(),
+              DatepickerModule.forRoot(),
               routing],
     schemas: [CUSTOM_ELEMENTS_SCHEMA],
     providers: [