add print call to degree plan menu

src/app/degree-planner/degree-planner.component.ts

@@ -208,8 +208,7 @@ export class DegreePlannerComponent implements OnInit, OnDestroy {
   }
 
   public onPrintPlanClick() {
-    // TODO
-    console.log('onPrintPlanClick');
+    window.print();
   }
 
   public onSharePlanClick() {