Configurable accepted player inputted names

[Arnuh]

For player entered commands pet data and pet type use whatever I name the value in code. Not the best for other languages and should have configuration for an additional name that works for tab completing, command suggestions, and just general command input.

Possibly support multiple languages? I think you can get the players locale which could be inputted for commands if that language is supported by the server. Current language handling should probably support such thing too but that's a separate issue.

/pet <type> and /pet modify <datatype> would take advantage of this