fixes #64 - FarCry 7.x support

I've just patched the config serialization and the link to the config page, I think that's all we need for now... The CSS fixes that I mentioned I've actually just done in Core as it was probably the better place to block unwanted styles.

This should work for FarCry 6.x but I haven't had time to test, please let me know if you see any issues locally.