update clipboard, fix timeslots

src/app/app.module.ts

@@ -8,7 +8,7 @@ import { HttpClientModule, HttpInterceptor, HttpHandler, HttpRequest, HTTP_INTER
 import { MaterialModule } from './material/material.module';
 import { QrCodeModule } from 'ng-qrcode';
 import { DatePipe } from '@angular/common';
-
+import { ClipboardModule } from '@angular/cdk/clipboard';
 
 import { AutofocusDirective } from './material/autofocus';
 
@@ -125,6 +125,7 @@ export class XhrInterceptor implements HttpInterceptor {
   ],
   imports: [
     BrowserModule,
+    ClipboardModule,
     AppRoutingModule,
     BrowserAnimationsModule,
     MaterialModule,
@@ -132,6 +133,7 @@ export class XhrInterceptor implements HttpInterceptor {
     FormsModule,
     ReactiveFormsModule,
     QrCodeModule,
+    
   ],
   exports: [ MaterialModule ],
   providers: [ { provide: APP_INITIALIZER, useFactory: init_app, deps: [ I18nService ], multi: true }, { provide: HTTP_INTERCEPTORS, useClass: XhrInterceptor, multi: true }, DatePipe,