ADISC v5.1 Upgrade

[Moo]

Hey folks.

I've just done another major server upgrade.

This upgrade:

1. Upgraded us to the latest version of our forum software (2.1, released less than a month ago)
2. Did the necessary upgrades to our addons (discord integration, media gallery, etc) and skins (dark theme) to make them compatible.
3. Also included a "global software update", IE updating the server's Operating System and all software tied to it (over 800 software package updates in all!) to a new version. Some of those pieces of software were rarely-used stuff, but some were pretty major, such as our webserver software, database server software, email software, etc. More system files were updated today than were during the pre-5.0 server hosting migration.

Here are the changes you might notice on our forums:

1. Enhanced post editing functions, including for profile messages
2. Markdown support
3. Tables
4. Reactions
5. Emoji enhancements
6. Video uploads
7. Faster page loads in some cases
8. Content bookmarking/sharing

As always, please message me if you notice anything not working post-update.
This was a fairly big update, equivalent to upgrading a Windows 7 system to Windows 10, so please, be on the lookout for anything strange. Thanks!