Author: Jamie Pratt
MDL-47494 ddmarker: NOBUG added progress bar for question conversion during upgrade
http://git.moodle.org/gw?p=moodle.git;a=commit;h=6a3b5993665040f974f8c1ed4ac4afe4b155785e
http://github.com/moodle/moodle/commit/6a3b5993665040f974f8c1ed4ac4afe4b155785e
+ 3.0 en [convertingimagetargetquestion,qtype_ddmarker]