Added ISPConfig help module and a the first parts of a basic trouble ticket system.

install/sql/ispconfig3.sql

interface/web/help/form/support_message.tform.php

interface/web/help/lib/admin.conf.php

interface/web/help/lib/lang/en_support_message.lng

interface/web/help/lib/lang/en_support_message_list.lng

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

interface/web/help/list/support_message.list.php

interface/web/help/support_message_del.php

interface/web/help/support_message_edit.php

interface/web/help/support_message_list.php

interface/web/help/templates/support_message_edit.htm

interface/web/help/templates/support_message_list.htm

interface/web/help/templates/support_message_view.htm