[CHG] The recaptcha view helper now can get the public key for the recaptcha rendering injected directly from the TYPO3.Recaptcha.security.publicKey settings. No need to set the public key in the template via the publicKey argument any more. See comments in the view helper class for usage. *

<code title="Example">
   <!-- if the parameter publicKey is not given, it will be taken from the TYPO3.Recaptcha.security.publicKey settings -->
   <captcha:form.captcha publicKey="...your recaptcha public key..." />
</code>