Author: Paul Holden
MDL-73295 webservice: only pass around sesskey for tokens as needed.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=af9f840e8dc88b6907ff803d98925e502b1dd6c8
http://github.com/moodle/moodle/commit/af9f840e8dc88b6907ff803d98925e502b1dd6c8
+ 3.11 en [resettokencomplete,core_webservice]