Changes in [config.toml.example](https://github.com/UoYMathSoc/2020-site/blob/master/config.toml.example#L26-L35), [structs/config.go](https://github.com/UoYMathSoc/2020-site/blob/master/structs/config.go#L32-L40) and [views/login.gohtml](https://github.com/UoYMathSoc/2020-site/blob/master/views/login.gohtml). See conditionally applied 'active' class in [views/elements/navbar.gohtml](https://github.com/UoYMathSoc/2020-site/blob/master/views/elements/navbar.gohtml#L28-L45) for example and css reference for '[disabled](https://getbootstrap.com/docs/4.0/components/forms/#disabled-forms)' attribute.
Changes in config.toml.example, structs/config.go and views/login.gohtml.
See conditionally applied 'active' class in views/elements/navbar.gohtml for example and css reference for 'disabled' attribute.