add about page and bug fix

Author: iplaycode

layouts/index.html

@@ -97,7 +97,7 @@
                     {{ end }}
                 {{ end }}
                 <li>
-                    <a href="/about">
+                    <a href="./about">
                         <i class="linecons-heart"></i>
                         <span class="tooltip-blue">关于本站</span>
                         <span class="label label-Primary pull-right hidden-collapsed">♥︎</span>