Added test script for dns_templatezone_add remote API function

- removed separate rspamd greylisting setting for policy and respect mail user/alias/forward/catchall setting for greylisting, fixes #5379

- fixed php warning on awstats cron

- change the way greylisting setting is evaluated (prio is now 1. mail user, 2. mail forward/alias, 3. catchall), fixes #5378

- fixed warning in chmod

- moved jailkit functions from bash files to system library

- prevent running update when mysql cannot be used from command line with credentials from mysql_clientdb.conf

On the Mailbox Quota dashlet, link rows to the mailbox page

See merge request ispconfig/ispconfig3!918

Put http to https redirect before SEO in Nginx virtualhost.

See merge request ispconfig/ispconfig3!907

fixed typo

See merge request ispconfig/ispconfig3!909

It makes better the compliance with HSTS, http to https redirect must be done before domain to www.domain.