Quests [1.8-1.21] | Set up goals for players

Quests [1.8-1.21] | Set up goals for players -----

Allow your players to do quests in return for rewards

Toggle cancel menu, autotrack improvements, more customisation

Added toggleable cancel menu #199
- Code (YAML):
  
  options :
  ...
  # Confirm quest cancellation with a separate menu
  gui-confirm-cancel : true
Improved quest autotrack to automatically choose the next started quest
Added ability to configure certain UI elements
- This involves changing the placeholder text for 'true' and 'false' for {task:completed} placeholders
Truncated the quest requirements list if there is more than one quest needed
- The plugin will now show "Quest 1 +X more" as the requirement, rather than saying "Quest 1, Quest 2, Quest 3, ..." to stop enormous lores
Changed quest logging to not spam the console with (potentially) hundereds of registrations, instead only showing totals at the end
Internal code improvements