v2.2.6 patch

The main reason for this patch is the first bullet below. Otherwise it's just a few tweaks and bug fixes that I've come across while working on new content. ;)

[h3]Changelog[/h3]

• Rolled back Unity version to 2019.4.24f1 as it was causing a crash on some users' systems.
  
• Fixed bug: Partitions and walls drop down again when you exit 1st person.
  
• Graphics: fbx.alwaysVisible applies in normal mode as well as 1st person.
  
• Modding: multisize specs without sound behaviour will not throw exception during load.
  
• Added the word 'Paint' to Freshwater Frenzy paints so they follow same naming convention as base game paints.