svn-support: Add a button to vcs-svn settings template to generate Apache config.

rhodecode/templates/base/vcs_settings.html

@@ -161,6 +161,9 b''
                         ${h.text('vcs_svn_proxy_http_server_url',size=59)}
                     </div>
                 </div>
+                <div class="buttons">
+                    <button class="btn btn-primary" id="vcs_svn_generate_cfg">${_('Generate Apache Config')}</button>
+                </div>
             </div>
         </div>
     % endif