- fixed rspamd settings
- fixed errors in webserver plugin
- fixed error in dkim domain handling

nginx: allow cgi execution under protected folder
nginx: allow protected folder under cgi-bin folder

Add description text for logging options.

+ fix php-fpm chroot

Fixed: #4307 The new LE ssl cert paths introduced in ISPConfig 3.1.1 where not set in the nginx_vhost.conf.master

The cipher suites are only set now for ISPConfig's own vhost, the intermediate security profile from Mozilla is used here.

- backported patches

see:
- http://git.ispconfig.org/panders/ispconfig3/commit/f7ec00b2f8ba3efc5bdeacef9c813f8a826ae3be#note_454

- http://en.wikipedia.org/wiki/SPDY