Author: Dongsheng Cai
MDL-27289, upgrade box.net repository plugin to use new box.net authentication process
http://git.moodle.org/gw?p=moodle.git;a=commit;h=078bd6815c5c34a868f3134db3f95ca23096c4cb
http://github.com/moodle/moodle/commit/078bd6815c5c34a868f3134db3f95ca23096c4cb
+ 2.0 en [callbackurl,repository_boxnet]
+ 2.0 en [callbackurltext,repository_boxnet]
+ 2.0 en [callbackwarning,repository_boxnet]