Cache files before reload, so if there are issues in the config/messages, they don't reset

[WizardCM]

Currently, if you have one issue in either of the files, they'll reset to default, and if you're unlucky to not have it open and ready to re-save.. you can easily lose everything.

Here's my idea; periodically, or on server launch, cache a temporary version - if an updated/modified version of either file on a reload has some YAML issues, display a message ingame, irc and console. In console, include more detail - where the issues can be found, etc, and revert the currently loaded config to the cached copy - but leave the real version unedited so the user can fix the issues and try again.