require_no_authentication has an ambiguous name

[sitarane]

It might mean "you can be authenticated or not, we don't care". It could mean "being not authenticated is a requirement"

It turns out the be the latter.

There's a comment in above the method definition, but it's ambigous as well:

Helper for use in before_actions where no authentication is required.

A better comment could be:

Helper for use in before_actions where it is required to be unauthenticated

A better name for the method could be:

• require_anon
• require_unauthenticated