[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.html

@@ -8,6 +8,7 @@
   [treeDepth]="treeDepth"
   (mainContentClicked)="mainContentClicked.emit()"
   [ariaLabel]="ariaLabel"
+  [exactMatch]="exactMatch"
 >
   <ng-template #button>
     <button