Webmin 1.850 released

Howdy all,

I've rolled out Webmin version 1.850 for all repos.

Changes since 1.844:

• Fixed multi-hostname DNS registration and the display of error messages in Let's Encrypt support.
• Numerous Majordomo module improvements, thanks to gnadelwartz.
• Added support for creating and editing port forwards in the FirewallD module.
• Filesystems that have less than 1% free disk space are now shown on the System Information page.
• Numerous bugfixes across multiple modules.

As always, let us know if you run into any problems.

Cheers,

Joe