Proxy Link-Forum 2.2.2

• Fix template error on node list page when marking a link proxy forum as a proxy

• Fully remove XF2.0 support
• Proxied node stats are now correctly propagated
• Add category support, thanks @Lukas W.

• Compatibility fix for ElasticSearch Essentials auto-complete when Gift Upgrades is also installed

• XenForo 2.2.4 compatibility update

• Fix destination forum view checks where not always performed before displaying information from that forum
• Fix destination forums would not always be considered for quick search or via the "Search sub-forums as well" feature
  • Inject if a link forum is a proxy in the node list & node permission list

• Fix incorrect elasticsearch query generation when (multiple) proxy link forum and target node are in the same search expression

• Fix search not including the forum that a proxy link forum points to when "Search sub-forums as well" is checked (aka "this forum" quick search)

• Fix template error when viewing forums

• Requires php 7.0+
• Now depends on Standard Library by Xon
• Supports XF2.2

• Fix error when a proxy link forum is configured to proxy a non-existent forum