Reseller is able to see a list of all clients and not just of his own clients in select field in the head of domain list when domain module is active.

- fixed escaping in lists

Fixed #4444 Error in the template htm /usr/local/ispconfig/interface/web/client/templates/reseller_edit_limits.htm

Fixed #4443 Error in the template htm /usr/local/ispconfig/interface/web/client/templates/client_edit_limits.htm

Fixed #4440 Error in the template htm /usr/local/ispconfig/interface/web/client/templates/client_template_edit_limits.htm

Improved the code that generates the ssh keys for clients and shell users and reorganized it into a central function.

Merged language files.