Previously all remote IPs appeared at 127.0.0.1, which made Akismet not very useful. Using the ActionDispatch Remote IP (http://api.rubyonrails.org/classes/ActionDispatch/RemoteIp.html) should provide more reliable results. Closes #16629
Currently any spam detected by Akismet by non-members via API will be logged in a separate table in the admin page. Closes #5612