Rename the app from MangaParty to MangaCircus

public/manga.js

@@ -5,7 +5,7 @@
   let me, M;
   try { [me, M] = await Promise.all([api('api/me'), api('api/manga?' + qsa({ m: id }))]); } catch (e) { return showError(e); }
   topNav(me);
-  document.title = M.title + ' · MangaParty';
+  document.title = M.title + ' · MangaCircus';
   const meta = M.meta || {}, main = $('main');
   main.textContent = '';