Modify ambiguous comments in the config file

I simply removed the 'name' in the `config.user.current` & `config.company.current` comments since the Proc don't expect a name (i.e current_user.name) but the current user or current company object.

I also changed `@app` for `current_company` so it makes more sense with  the default values of `config.user.current` and with the config name. it could also be `@company`.