Quark: RotN Edition

Fixed crashing previous 1.6-189 build.

• Adds "backpack pickup" option, allowing item pickups to go into the backpack automatically when your main inventory is full.
• Adds configurable glowing items, which will have glowing effect applied when near the player
  • Totems of holding also have this feature now
• Internal fixes to backpack internal inventory code

Thanks phanta for the changes!