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.ts

@@ -0,0 +1,52 @@
+import { Component, Inject } from '@angular/core';
+import { MAT_DIALOG_DATA, MatDialogRef } from '@angular/material';
+import { Observable } from 'rxjs';
+import { FormArray, FormBuilder, FormGroup, Validators } from "@angular/forms";
+import { DiscountDataSource } from "./discount-datasource";
+
+@Component({
+  selector: 'app-modifiers',
+  templateUrl: './discount.component.html',
+  styleUrls: ['./discount.component.css']
+})
+export class DiscountComponent {
+  list: any[];
+  form: FormGroup;
+  dataSource: DiscountDataSource;
+
+  displayedColumns = ['name', 'discount'];
+
+  constructor(
+    public dialogRef: MatDialogRef<DiscountComponent>,
+    private fb: FormBuilder,
+    @Inject(MAT_DIALOG_DATA) public data: Observable<any[]>
+  ) {
+    this.createForm();
+    this.data.subscribe((list: any[]) => {
+      this.list = list;
+        this.form.setControl('discounts', this.fb.array(
+          this.list.map(
+            x => this.fb.group({
+              name: [x.name],
+              discount: ["", [Validators.min(0), Validators.max(100)]]
+            })
+          )
+        ));
+      this.dataSource = new DiscountDataSource(list);
+    });
+  }
+
+  createForm() {
+    this.form = this.fb.group({
+      discounts: ''
+    });
+  }
+
+  accept(): void {
+    const array = this.form.get('discounts') as FormArray;
+    this.list.forEach((item, index) => {
+      item.discount = Math.max(Math.min(array.controls[index].value.discount, 100), 0);
+    });
+    this.dialogRef.close(this.list);
+  }
+}