TeamSpeak 3 Integration 2.2.0

• Require XenForo 2.2+.
• Require PHP 7.2+.
• Require Standard Library.
• Harden various template modifications.
• Update TeamSpeak identity descriptions when a user unlinks their account or they change their username.
• Fix an issue causing an error when there are orphaned server groups.
• Minor standardisation related changes.

• Add user criteria based on number of TeamSpeak identities linked or not linked.
• Ensure last seen information indicates the user is viewing the TeamSpeak area rather than their account details.
• Wire up the TeamSpeak viewer permission.
• Other minor fixes and improvements.

• Rebuild package to ensure files are included correctly after an XF bug.

• Increase frequency of server group syncing.

• Fix an issue where server query port wouldn't be accurate on the integration test page.
• Handle differing TeamSpeak 3 environments better when integration testing.
• Remove some old stuff from the package.

• Drop unused column leftover from XF1.

• Similar to my Discord add-on, alerts can now be mirrored from XenForo to TeamSpeak.
  • Alerts will appear as private messages sent from the bot.
  • Users can opt-out of this via their Preferences area and admins can disable the feature from the ACP.
• Display a server viewer in the ACP.
• Add a widget for the server viewer.