Author: Andrew Nicols
MDL-63401 tool_dataprivacy: Allow expiriration of users without end date
http://git.moodle.org/gw?p=moodle.git;a=commit;h=ec259ef81290de7fc037c58f7c1c63a8d55a16ff
http://github.com/moodle/moodle/commit/ec259ef81290de7fc037c58f7c1c63a8d55a16ff
+ 3.4 en [requireallenddatesforuserdeletion,tool_dataprivacy]
+ 3.4 en [requireallenddatesforuserdeletion_desc,tool_dataprivacy]