Enable admin by default

setup/templates/steps/config.html

@@ -93,7 +93,7 @@ Or in plain english: if receivers start to classify your mail as spam, this post
 manage your email domains, users, etc.</p>
 
 <div class="form-group">
-    <input type="checkbox" name="admin_enabled" value="true" id="admin">
+    <input type="checkbox" name="admin_enabled" value="true" id="admin" checked>
   	<label>Enable the admin UI (and path to the admin UI)</label>
     <input class="form-control" type="text" name="admin_path" id="admin_path" style="display: none">
 </div>