Fix: import script to fit the new structure of voucher table (is_printed field removed, voucher_type != KOT is now assumed to be printed)

Fix: Take-away bill type is now removed
Fix: Table overview now shows the right amounts
Voucher Save and Update should now work
Discounts now working (permissions are not checked)

bookie/src/app/sales/discount/discount.component.html

@@ -0,0 +1,30 @@
+<h2 mat-dialog-title>Discount</h2>
+<mat-dialog-content>
+  <form [formGroup]="form" fxLayout="column">
+    <mat-table #table [dataSource]="dataSource" formArrayName="discounts">
+
+      <!-- Name Column -->
+      <ng-container matColumnDef="name">
+        <mat-header-cell *matHeaderCellDef>Name</mat-header-cell>
+        <mat-cell *matCellDef="let row">{{row.name}}</mat-cell>
+      </ng-container>
+
+      <!-- Discount Column -->
+      <ng-container matColumnDef="discount">
+        <mat-header-cell *matHeaderCellDef class="center" fxFlex>Discount</mat-header-cell>
+        <mat-cell *matCellDef="let row; let i = index" class="center" [formGroupName]="i" fxFlex>
+          <mat-form-field>
+            <input matInput type="number" formControlName="discount" autocomplete="off">
+          </mat-form-field>
+        </mat-cell>
+      </ng-container>
+
+      <mat-header-row *matHeaderRowDef="displayedColumns"></mat-header-row>
+      <mat-row *matRowDef="let row; columns: displayedColumns;"></mat-row>
+    </mat-table>
+  </form>
+</mat-dialog-content>
+<mat-dialog-actions align="end">
+  <button mat-button [mat-dialog-close]="false">Cancel</button>
+  <button mat-button (click)="accept()" color="primary">Ok</button>
+</mat-dialog-actions>