Author: ferran.recio
MDL-66332 too_capability: add show differences option
http://git.moodle.org/gw?p=moodle.git;a=commit;h=e96bbb53afdaa16650164809689a45ac35926b22
http://github.com/moodle/moodle/commit/e96bbb53afdaa16650164809689a45ac35926b22
+ 3.9 en [onlydiff,tool_capability]
+ 3.9 en [filters,tool_capability]
+ 3.9 en [nodifferences,tool_capability]