Author: Juan Leyva
MDL-69095 tool_mobile: Avoid non-https sites using qrlogin by default
http://git.moodle.org/gw?p=moodle.git;a=commit;h=5762e5ec3e565c1e3aa7c1bce2a8dfe702f76f46
http://github.com/moodle/moodle/commit/5762e5ec3e565c1e3aa7c1bce2a8dfe702f76f46
+ 3.9 en [qrcodetype_desc,tool_mobile]