Incremental Hardcore

• Removes the incompatible version upgrade check. It was VERY poorly implemented and I'll get around to making a proper one within the coming update.
• Adds an alias for the settings menu (inh:settings)
• Changes some function names to make them less yappy
• Reduced redundant health update code
• Removed template settings in the setting function
• Added an invalid health warning to the ReviveHealth setting.

Support for 1.21.5 is being tested