Enhanced getmail support and the installer.

install/install.php

install/lib/installer_base.lib.php

install/tpl/config.inc.php.master

install/uninstall.php

interface/lib/classes/tform.inc.php

interface/web/admin/form/server.tform.php

interface/web/admin/lib/lang/en_server.lng

interface/web/admin/templates/server_edit_config.htm

interface/web/client/templates/client_edit_limits.htm

interface/web/mail/lib/lang/en_mail_get.lng

interface/web/mail/lib/lang/en_mail_get_list.lng

interface/web/mail/lib/lang/en_spamfilter_policy.lng

interface/web/mail/lib/module.conf.php

interface/web/mail/mail_user_edit.php

server/lib/app.inc.php

server/lib/classes/getconf.inc.php

server/plugins-enabled/getmail_plugin.inc.php

server/scripts/getmail.sh

server/server.php