Everywhere: Use Catbox API asynchronously

Fixes #2

Slon/Api/V1/Statuses.HC

@@ -196,7 +196,7 @@ U0 @slon_api_v1_statuses_delete(SlonHttpSession* session)
                             while (*(attachment_url_ptr - 1) != '/') {
                                 --attachment_url_ptr;
                             }
-                            @slon_api_delete_from_catbox(session, attachment_url_ptr);
+                            Spawn(&@slon_api_async_delete_from_catbox, StrNew(attachment_url_ptr, adam_task), "SlonAsyncCatboxDelete");
                         }
                     }
                 }