Changes:
Added: Existing post and upvote views on user admin page.
Added: Support SMTP authentication and SSL with Net::SMTP.
Added: Support HTTP::Tiny for reCAPTCHA.
Added: Support HTTP::Tiny for attaching linked images.
Changed: Misc. small changes.
Fixed: Policy page redirection loop with CGI. [Andrea Bianchi]
Fixed: Username autocompletion with CGI.
Removed: Manual configuration of SMTP authentication mechanism.