This change tracks signup captcha scores in the signup_captcha column in the users table.
It slightly modifies the captcha verify method to return both the score and success.
see: https://github.com/storj/storj/issues/5067
Change-Id: I7b3993e44958cfcf179806c7df19d6887fe3eda9
Adds a new configuration for hcaptcha enabled, secretkey, and sitekey.
If both reCAPTCHA and hCaptcha are configured as "enabled", reCAPTCHA
will be used.
Change-Id: I73cc6e133d8da3555e0ed8b2b377cf9eb263e6dc