New: Better way to define url in clicktodial module

ChangeLog

htdocs/admin/clicktodial.php

htdocs/langs/ca_ES/admin.lang

htdocs/langs/da_DA/admin.lang

htdocs/langs/en_US/admin.lang

htdocs/langs/fr_FR/admin.lang

htdocs/langs/it_IT/admin.lang

htdocs/langs/nl_BE/admin.lang

htdocs/langs/nl_NL/admin.lang

htdocs/langs/pl_PL/admin.lang

htdocs/langs/ro_RO/admin.lang

htdocs/langs/ru_RU/admin.lang

htdocs/langs/sl_SL/admin.lang

htdocs/lib/functions.lib.php