feat: allow disable toc on page frontmatter

refactor: move pager to partial/components

chore: add head-css and favicons

- support favicons and page descriptions
- dynamic title based on page
- add custom head-end hook

feat: add opengraph to head

fix: sidebar not hiding when resizing

layouts/docs/single.html

@@ -10,7 +10,7 @@
           {{ .Content }}
         </div>
         {{ partial "components/last-updated.html" . }}
-        {{ partial "pager.html" . }}
+        {{ partial "components/pager.html" . }}
       </main>
     </article>
   </div>