Author: Paul Holden
MDL-73180 reportbuilder: improve relative date filter definitions.
Changes since the original implementation in e55abd71 mean that
relative date filtering (by last/next day/week, etc) is now based
on the actual current time, rather than the start or end of the
current time unit.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=a844d885b25e186ac14e91fd2aa13127726fb2be
http://github.com/moodle/moodle/commit/a844d885b25e186ac14e91fd2aa13127726fb2be
+ 4.0 en [filterdatelast,core_reportbuilder]
- 4.0 en [filterdateprevious,core_reportbuilder]