Author: Jamie Pratt
MDL-47494 ddimageortext: OU-1441 added a refresh button to reload page and especially preview area.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=f15a56df11900c556604fd34c8f4c4b052aff2fc
http://github.com/moodle/moodle/commit/f15a56df11900c556604fd34c8f4c4b052aff2fc
+ 3.0 en [refresh,qtype_ddimagetoimage]
+ 3.0 en [refresh_help,qtype_ddimagetoimage]