2.6.4f5 - Community feedback fixes and improvements

UI fixes and refinement:

• left-over tooltip fix
  
• bottom UI bars critical values flashing: less aggressive and only when stats change for worse
  
• remember boosted dice rolls in rewind mode
  

Better async loading:

• better loading progress animation in game and title scene loading
  
• no lag while verifying save directories at title startup scene
  
• no lag in switching between characters in the continue the game screen
  
• no lag when checkpoints screenshots are generated and saved
  

More robust save system:

• remember last save slot fix
  
• prevent overwrite of old Early Access save slots
  

Community feedback changes:

• new game tutorials on/off toggle after first pop-up tutorial
  
• non-lethal attacks also on dogs in Act 1
  

Bug fixes:

• dark UI background in character screen stays even during combat scenes
  
• Fixed an instance when NPC received an item, but gained no wealth in Act 1