Resolve "[Queue-2.0] Removing Labs"

What does this mr do?

Make sure the user gets directed to the correct pages when clicking the delete buttons for a lab.

Actions taken to fix bug

Does this MR meet the acceptance criteria?

• I have added a changelog entry to reflect the significant changes I made and the bug I fixed.
• A test was created to test the bug.
• I have updated the documentation accordingly.
• I adhere to the style guide. Closes #376 (closed)

src/main/java/nl/tudelft/queue/controller/LabController.java

@@ -17,7 +17,6 @@
  */
 package nl.tudelft.queue.controller;
 
-import java.time.LocalDateTime;
 import java.util.Comparator;
 import java.util.List;
 import java.util.Optional;
@@ -353,7 +352,7 @@ public class LabController {
 	@PostMapping("/lab/{lab}/delete")
 	@PreAuthorize("@permissionService.canManageLab(#lab)")
 	public String deleteLab(@PathEntity Lab lab) {
-		lab.setDeletedAt(LocalDateTime.now());
+		ls.deleteLab(lab);
 		var session = sCache.getOrThrow(lab.getSession());
 
 		// TODO: Redirect to an edition collection specific page for shared labs