Fixed confirmations to properly check for existence of WPML plugin, avoiding conflict with Polylang's incomplete WPML overrides.
Set AJAX form handlers to respond with JSON rather than plain text to allow for response message themeing by response type. Other theme tweaks and image adjustments too.
Updating translations. New Strings: 'Confirm Email' and 'Read the petition'.
Getting editable petition message textbox in the petition reader popup to work well with Firefox
Added AJAX loader animation gif and tweaked styles to preserve consistency with custon user themes (petition reader popup link hidden by default) and (legacy form label hiding on input focus script added).