Refactor html templates

This commit entirely refactors the use of html templates. Instead of
inheriting from a shared template, we insert the results into a base
template.

internal/dis/component/server/home/public.html

@@ -1,14 +1,4 @@
-{{ template "_base.html" . }}
-{{ define "title" }}WissKI Distillery{{ end }}
-
-{{ define "content" }}
-{{ block "@custom/about" . }}
-<div class="pure-u-1">
-    <p>
-        For more information, see <a href="{{ .SelfRedirect }}">{{ .SelfRedirect }}</a>.
-    </p>
-</div>
-{{ end }}
+{{ .About }}
 
 <div class="pure-u-1">
     <h2>WissKIs on this Distillery</h2>
@@ -33,4 +23,3 @@
         </div>
     {{ end }}
 {{ end }}
-{{ end }}