Author: Damyon Wiese
MDL-18014 Atto autosave: Show warning when the server cannot be contacted for autosave.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=8a5db5472e5b8815b039ee8194da78583480378f
http://github.com/moodle/moodle/commit/8a5db5472e5b8815b039ee8194da78583480378f
+ 2.8 en [autosavefailed,editor_atto]