Author: Andrew Nicols
MDL-61819 editor_atto: Implement null provider
http://git.moodle.org/gw?p=moodle.git;a=commit;h=8f52e5f0da453bdee74818361f419b3d242cb10c
http://github.com/moodle/moodle/commit/8f52e5f0da453bdee74818361f419b3d242cb10c
+ 3.4 en [autosaves,editor_atto]
+ 3.4 en [privacy:metadata:database:atto_autosave,editor_atto]
+ 3.4 en [privacy:metadata:database:atto_autosave:userid,editor_atto]
+ 3.4 en [privacy:metadata:database:atto_autosave:drafttext,editor_atto]
+ 3.4 en [privacy:metadata:database:atto_autosave:timemodified,editor_atto]