Author: Jerome Mouneyrac
MDL-35998 New mobile menu: with CSS url + existing enable mobile web services
http://git.moodle.org/gw?p=moodle.git;a=commit;h=33af78821061d2f6a70757ea3c0d8cae419cc77c
http://github.com/moodle/moodle/commit/33af78821061d2f6a70757ea3c0d8cae419cc77c
+ 2.4 en [configmobilecssurl,core_admin]
+ 2.4 en [mobile,core_admin]
+ 2.4 en [mobilecssurl,core_admin]