Add snipping lines to welcome page without guests

res/welcome.html

@@ -166,6 +166,7 @@ h1::after {
                 <div class="mx_ButtonLabel">_t("Create Account")</div>
             </a>
         </div>
+        <!-- BEGIN Ansible: Remove these lines when guest access is disabled -->
         <div class="mx_ButtonRow">
             <div>
                 <div class="mx_ButtonWrapperText">_t("Need help?")</div>
@@ -180,5 +181,6 @@ h1::after {
                 </a>
             </div>
         </div>
+        <!-- END Ansible: Remove these lines when guest access is disabled -->
     </div>
 </div>