Implement permissions system with database

[ItsJustMeChris]

Now that the database is a thing, we can implement a core feature for bot permissions and extend the module system to use it. This should happen as a core feature, not a stand alone module, but whatever is fine, permission module or core permissions. I would assume that the easiest way to do this is to have permissions implemented for each module, based on the users ranks, IE rank based permissions, stored to the database for each server and module.

If this is implemented as a 'module' please follow the dependency module format, see help or modulehelper modules, ensure it is not togglable from the modulehelper.

[ItsJustMeChris]

This is done, needs more work will open another Issue.