make button vs link usage consistent

srv/src/http/tpl/edit-post.html

@@ -104,12 +104,15 @@
     <input type="submit" value="Update" formaction="{{ BlogURL "posts/" }}" />
     {{ end }}
 
-    <a href="{{ BlogURL "posts/" }}">
-      <button type="button">Back</button>
-    </a>
   </p>
 
 </form>
+
+<p>
+  <a href="{{ BlogURL "posts/" }}">
+    Back to Posts
+  </a>
+</p>
 {{ end }}
 
 {{ template "base.html" . }}

srv/src/http/tpl/posts.html

@@ -2,7 +2,7 @@
 
   <p>
     <a href="{{ BlogURL "posts/" }}?edit">
-      <button>New Post</button>
+      New Post
     </a>
   </p>
 
@@ -20,7 +20,7 @@
         <td><a href="{{ PostURL .ID }}">{{ .Title }}</a></td>
         <td>
           <a href="{{ PostURL .ID }}?edit">
-            <button>Edit</button>
+            Edit
           </a>
         </td>
         <td>