Restrict inline translations

¿Was this causing problems?

It is there so the current_user is memoized https://github.com/elpulgardelpanda/i18nline-rails/blob/3260d153da2db5b2101ef909a57fe0e81aeec3c4/lib/i18nline/action_view_extension.rb#L7 so we don't have to call it each time.

I think this should be put back.