feat: add confirmation modal to topic event deletion

public/language/en-GB/topic.json

@@ -24,6 +24,7 @@
 	"edit": "Edit",
 	"delete": "Delete",
 	"delete-event": "Delete Event",
+	"delete-event-confirm": "Are you sure you want to delete this event?",
 	"purge": "Purge",
 	"restore": "Restore",
 	"move": "Move",

public/src/client/topic/threadTools.js

@@ -53,12 +53,15 @@ define('forum/topic/threadTools', [
 		topicContainer.on('click', '[component="topic/event/delete"]', function () {
 			const eventId = $(this).attr('data-topic-event-id');
 			const eventEl = $(this).parents('[component="topic/event"]');
+			bootbox.confirm('[[topic:delete-event-confirm]]', (ok) => {
+				if (ok) {
 					api.del(`/topics/${tid}/events/${eventId}`, {})
 						.then(function () {
 							eventEl.remove();
 						})
 						.catch(app.alertError);
-			return false;
+				}
+			})
 		});
 
 		// todo: should also use topicCommand, but no write api call exists for this yet