Author: Jeff Webster
MDL-48501 lang: update reCAPTCHA language strings
http://git.moodle.org/gw?p=moodle.git;a=commit;h=1fca1d68b5c29d6fbd69ae7ec5e8d97b1eaca0f9
http://github.com/moodle/moodle/commit/1fca1d68b5c29d6fbd69ae7ec5e8d97b1eaca0f9
+ 3.4 en [configrecaptchaprivatekey,core_admin]
+ 3.4 en [configrecaptchapublickey,core_admin]
+ 3.4 en [recaptcha_help,core_auth]
+ 3.4 en [missingrecaptchachallengefield,core]