Git commits in Moodle 3.1.11 by Jeff Webster

commit cfefd25d6c9b9ed3852917620eeb318318209163
Author: Jeff Webster <jsw@ncsu.edu>
Date:   Sun, 04 Mar 2018 14:25:30 +0800
Tag:    v3.1.11

MDL-48501 form/recaptcha: update to use reCAPTCHA v2

commit fe82348810f0d5688956a3649fe9e85b0f885f42
Author: Jeff Webster <jsw@ncsu.edu>
Date:   Sun, 04 Mar 2018 14:25:30 +0800
Tag:    v3.1.11

MDL-48501 login: update signup_form to use reCAPTCHA v2

commit 684374466097e61431e425c814181eedde034032
Author: Jeff Webster <jsw@ncsu.edu>
Date:   Sun, 04 Mar 2018 14:25:30 +0800
Tag:    v3.1.11

MDL-48501 mod_feedback: update feedback to use reCAPTCHA v2

commit 956166b7664ca2a2612b65cd740cf86ee886a8e4
Author: Jeff Webster <jsw@ncsu.edu>
Date:   Sun, 04 Mar 2018 14:25:29 +0800
Tag:    v3.1.11

MDL-48501 recaptchalib_v2: add new lib to support reCAPTCHA v2

commit c692bb567fe379104fa349c732c99ab1f530ada2
Author: Jeff Webster <jsw@ncsu.edu>
Date:   Sun, 04 Mar 2018 14:25:21 +0800
Tag:    v3.1.11

MDL-48501 lang: update reCAPTCHA language strings