New mail subscription with digest

conf/dokuwiki.php

inc/actions.php

inc/common.php

inc/confutils.php

inc/form.php

inc/lang/en/lang.php

inc/lang/en/subscr_digest.txt

inc/lang/en/subscr_form.txt

inc/lang/en/subscr_list.txt

inc/lang/en/subscr_single.txt

inc/pageutils.php

inc/subscription.php

inc/template.php

lib/exe/indexer.php

lib/exe/js.php

lib/scripts/subscriptions.js

lib/tpl/default/design.css

lib/tpl/default/main.php