footer.tpl: remove escaping of $CONF[footer_link]

url-escaping $CONF[footer_link] makes the link look like
"http%3A%2F%2Fexample.com". Browsers interpret this as file name 
relative to the current domain and directory, not as full 
http://example.com URL. Removed escaping.

Thanks to jan-kruis @SF for pointing this out.
https://sourceforge.net/tracker/?func=detail&aid=3153035&group_id=191583&atid=937964


git-svn-id: https://svn.code.sf.net/p/postfixadmin/code/trunk@940 a1433add-5e2c-0410-b055-b7f2511e0802

templates/footer.tpl

@@ -10,8 +10,8 @@
 	<a target="_blank" href="http://postfixadmin.sf.net/update-check.php?version={$version|escape:"url"}">{$PALANG.check_update}</a>
 	{if $CONF.show_footer_text == 'YES' && $CONF.footer_link}
 		&nbsp;&nbsp;&nbsp;|&nbsp;&nbsp;&nbsp;
-		<a href="{$CONF.footer_link|escape:"url"}">{$CONF.footer_text|escape}</a>
+		<a href="{$CONF.footer_link}">{$CONF.footer_text|escape}</a>
 	{/if}
 </div>
 </body>
-</html>
+</html>