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=5bc61c9686a1a6e4b1564a00c0229c08fe602041
http://github.com/moodle/moodle/commit/5bc61c9686a1a6e4b1564a00c0229c08fe602041
+ 3.3 en [requireallenddatesforuserdeletion,tool_dataprivacy]
+ 3.3 en [requireallenddatesforuserdeletion_desc,tool_dataprivacy]