Migrate to djblets.recaptcha for reCAPTCHA

Review Request #7938 — Created Feb. 1, 2016 and submitted — Latest diff uploaded

Information

Review Board
release-2.6.x

Reviewers

This patch migrates Review Board to use the djblets.recaptcha app for
handling the reCAPTCHA API version 2. The recaptcha-client library we
were using only supported API version 1, so we have dropped it as a
dependency.

  • Tested that registration worked with reCAPTCHA enabled.
  • Tested that reCAPTCHA can be disabled.