add google event tracking to policy subscriptions
add comments to ga events script (js only)
add identifying class names to policy edit and new links
track edit and new policy link clicks (js only)
add identifying class name to policy edit/new submit button
add tracking to click on policy submit (js only)
add identifying class name to division edit links
add event tracking to click on division edit link
add identifying class to division edit submit button
add tracking to click on division edit submit button
add identifying classes to user signup link and registration submit button
track click on 'signup' and submit button for user registration
track social share buttons (js only)
Fix typo
only attactch event tracking if google analytics is active (js only)
Merge pull request #1002 from openaustralia/ga_event_tracking

Google Analytics event tracking