Author: Juan Leyva
MDL-69031 tool_mobile: Add missing features that can be disabled in 3.9
http://git.moodle.org/gw?p=moodle.git;a=commit;h=01ec0ee85bb7f180b67a58e7014cabeab240bc6d
http://github.com/moodle/moodle/commit/01ec0ee85bb7f180b67a58e7014cabeab240bc6d
+ 3.9 en [openusingembeddedbrowser,tool_mobile]
+ 3.9 en [scanqrcode,tool_mobile]