Author: Andrew Davis
activities MDL-24180 realtered available to/from strings in activities and conditional completion to try and make the unclear clear
http://git.moodle.org/gw?p=moodle.git;a=commit;h=2248b994aee166b37385cd26d3e5c8f823b5cf2e
http://github.com/moodle/moodle/commit/2248b994aee166b37385cd26d3e5c8f823b5cf2e
+ 2.0 en [availablefrom,core_condition]
+ 2.0 en [availableuntil,core_condition]
+ 2.0 en [availabledate,mod_assignment]
+ 2.0 en [availablefromdate,mod_data]
+ 2.0 en [availabletodate,mod_data]
+ 2.0 en [available,mod_lesson]