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=1d6683bb0ef451fb56aa216db13038eead51db3a
http://github.com/moodle/moodle/commit/1d6683bb0ef451fb56aa216db13038eead51db3a
+ 4.0 en [openusingembeddedbrowser,tool_mobile]
+ 4.0 en [scanqrcode,tool_mobile]