Author: Paul Holden
MDL-73090 reportbuilder: confirmation before resetting conditions.
Also prefetch all lang strings used by conditions editor.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=80dd297a62d44f98467e56bbebdccdc1e30e36af
http://github.com/moodle/moodle/commit/80dd297a62d44f98467e56bbebdccdc1e30e36af
+ 4.0 en [resetconditions,core_reportbuilder]
+ 4.0 en [resetconditionsconfirm,core_reportbuilder]