Allow multiple ReCaptchas in one page

Currently, it is not possible to place two or more ReCaptcha elements in one HTML page with the tools provided by ZF.

It can be done manually, see here or here.

I think, a framework should be able to provide this as well. I would suggest to move to "explicit_render" for any captcha and allow setting unique names via a new option (or use the existing name?).

[weierophinney]

This repository has been closed and moved to laminas/laminas-captcha; a new issue has been opened at laminas/laminas-captcha#2.