Fixed the ban plugin

* Now it synchs the bans with the vanilla config (useful in case shine doesn't loads up or users like to use the web-admin etc. )
* Fixed bug that the default config was never generated
A numeric loop would be better here than ipairs. It's never used elsewhere in the mod. Also, another minor style thing is I prefer ID to Id, so `VanillaIDs` instead of `VanillaId`.