[SM-525] Fix projects not being active when on subroute (#4815)

* Move overview to separate route. Change nav-item to use subset instead of exact

* Add support for setting exactMatch in nav-item and nav-group

* Change default to subset

libs/components/src/navigation/nav-group.component.ts

@@ -36,6 +36,12 @@ export class NavGroupComponent extends NavBaseComponent implements AfterContentI
    */
   @Input()
   open = false;
+
+  /**
+   * if `true`, use `exact` match for path instead of `subset`.
+   */
+  @Input() exactMatch: boolean;
+
   @Output()
   openChange = new EventEmitter<boolean>();