Author: Jay Jayswal
MDL-52158 auth: Improve recaptcha settings and help
http://git.moodle.org/gw?p=moodle.git;a=commit;h=efdbc2929d0bf00bcdba487fc15e74104ddea5ae
http://github.com/moodle/moodle/commit/efdbc2929d0bf00bcdba487fc15e74104ddea5ae
+ 3.1 en [configrecaptchaprivatekey,core_admin]
+ 3.1 en [configrecaptchapublickey,core_admin]
+ 3.1 en [recaptchaprivatekey,core_admin]
+ 3.1 en [recaptchapublickey,core_admin]