Feature: Added hotkeys in vouchers for selecting date (f2), save (ctrl+s) and post (ctrl+p)

overlord/src/app/purchase/purchase.module.ts

@@ -29,6 +29,7 @@ import {MomentDateAdapter} from '@angular/material-moment-adapter';
 import {A11yModule} from '@angular/cdk/a11y';
 import {PurchaseDialogComponent} from './purchase-dialog.component';
 import {FlexLayoutModule} from '@angular/flex-layout';
+import {HotkeyModule} from "angular2-hotkeys";
 
 export const MY_FORMATS = {
   parse: {
@@ -48,6 +49,7 @@ export const MY_FORMATS = {
     CommonModule,
     CdkTableModule,
     FlexLayoutModule,
+    HotkeyModule,
     MatAutocompleteModule,
     MatButtonModule,
     MatCardModule,