Moved to Angular 6.0

----

Pending
* Table width for the points column in incentive
* Linting
* keyboard navigation where it was used earlier
* can remove the unused totals calculated serverside in productledger
* spinner and loading bars
* Activate Guard for Employee Function tabs
* Progress for Fingerprint uploads
* deleted reconcile and receipe features as they were not being used
* focus the right control on component load

overlord/src/app/issue/issue-grid-datasource.ts

@@ -0,0 +1,17 @@
+import {DataSource} from '@angular/cdk/collections';
+import {Observable} from 'rxjs';
+
+
+export class IssueGridDataSource extends DataSource<any> {
+
+  constructor(private data: Observable<any[]>) {
+    super();
+  }
+
+  connect(): Observable<any[]> {
+    return this.data;
+  }
+
+  disconnect() {
+  }
+}