Caefer's Skilling Overhaul

This is the first version that includes all the basic concepts of the mod from my release todo list. I will keep iterating over the mod from here, but I will use beta releases for smaller fixes and tweaks. Future release builds will continue to be less frequent.

Added command /rpg addcoins [amount]
- Changed the zone unlocking pattern to be a mix of player level advancements and zone bosses.
- Added wandering zone bosses that can be killed to unlock zones.
- Added Boss Arenas accessible via portal to allow for certain zone unlocks.
- Wandering bosses and the Boss Arenas can each be fought once per night even after initial zone unlock.
- Updated messaging for zone unlocks to track multiplayer groups defeating bosses together.
- Added loot chest rewards for conquering a Boss Arena.
- Fixed Scrolling issues with the Skill Guide.
- Removed the tooltip information from the Skill Guide (info was relocated directly into the guide).
- Added /rpg zone command to display information relating to unlock requirements.
- Updated the /rpg intro guide information.
- Changed /rpg intro command to /rpg guide.
- Rebuilt new guide interface and added search and links.
- Fixed some remaining crafting loop xp exploits.
- Adjusted math for xp award to allow fractional xp awards.
- Shrines are no longer breakable by default.
- Shrines now have a mining fatigue aura.
- Added shrine stat resets costing 20 copper per player level.
- Added a new op command /rpg safeshrine on | off.
- Added /rpg help [command] and /rpg guide on|off to control welcome messages.
- Updated the level curves and xp rewards to compress tool leveling and extend skill levels.
- Added Skill Prestige levels that grant stat points for xp levels gained past level 100.
- Shields now level up like other equipment.
- Tightened the logic on when Shrine's soul campfires light for held companion tags.
- Builder's inventory now hides unusable rows.