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=a996aa4ea63f5424aafb472c82d1f97277b287b7
http://github.com/moodle/moodle/commit/a996aa4ea63f5424aafb472c82d1f97277b287b7
+ 3.5 en [requireallenddatesforuserdeletion,tool_dataprivacy]
+ 3.5 en [requireallenddatesforuserdeletion_desc,tool_dataprivacy]