Add Greatest of All Time manga dashboard

public/common.js

@@ -96,6 +96,7 @@ function topNav(me) {
   document.addEventListener('click', () => { panel.hidden = true; });
   const nav = h('header', { class: 'nav' },
     h('a', { class: 'brand', href: './' }, 'MangaCircus'),
+    h('a', { class: 'btn nav-greatest', href: 'greatest.html', title: 'Shijō Saikō no Manga · Greatest of All Time' }, 'Greatest'),
     h('div', { class: 'grow' }),
     h('div', { class: 'bell-wrap' }, bell, panel),
     h('a', { class: 'btn', href: 'settings.html' }, 'Settings'),