plugins/tpl/templates/admin/template_editor/themes_location_item.stpl
<tr class="bg1">
<td nowrap><b>/{location}/</b></td>
<td> </td>
<td nowrap>{themes_lib_dir} </td>
<td align="right">
{if("location" ne "framework")}
<input type="button" value="{t(Add theme)}" onclick="window.location.href='{add_url}'">
{/if}
</td>
</tr>