refactored checking for missing json files. Also added the possibility for "limited_to_guild" to be passed at the top level of a settings dict. This allows a cog to be limited to one guild.
refactored checking for missing json files. Also added the possibility for "limited_to_guild" to be passed at the top level of a settings dict. This allows a cog to be limited to one guild.

RainbowDinoaur/roxbot