Prevent 60 seconds delay in mailbox creation when mapping of mailbox zui and gid to web uid and gid is not used.

show error-message when a client / reseller change the ip for a domain that was created by the admin

Proposed fix for #3929 (letsencrypt can not be activated when a new website gets created). Needs testing.

- Changed default value for expire of ftp user, should have fixed: #3862

Removed hard-coded suffixes because it gets dynamically added by "$app->functions->formatBytes($tmp_rec['t']);".