Fixed CC placeholder not showing on startup. Fixes #351

src/controlCenter/controlCenter.vala

@@ -220,7 +220,8 @@ namespace SwayNotificationCenter {
                 return true;
             });
 
-            // Switches the stack page depending on the
+            stack.set_visible_child_name (STACK_PLACEHOLDER_PAGE);
+            // Switches the stack page depending on the amount of notifications
             list_box.add.connect (() => {
                 stack.set_visible_child_name (STACK_NOTIFICATIONS_PAGE);
             });