Use config.toml for gmnhg options
Some metadata is best left to the config file. For instance, site title can be reused from existing Hugo's
config.toml instead of being hardcoded in
layouts/gmnhg/index.gotmpl as it is now.
This can probably also be used to fine-tune gmnhg behaviour later, but there's nothing to configure yet.
Deleting a branch is permanent. It CANNOT be undone. Continue?