Author: Davo Smith
MDL-66017 block_myoverview: filter by custom course field
http://git.moodle.org/gw?p=moodle.git;a=commit;h=8d166d77451e7650f9f5695d56fb2b9f35570f1f
http://github.com/moodle/moodle/commit/8d166d77451e7650f9f5695d56fb2b9f35570f1f
+ 3.8 en [aria:customfield,block_myoverview]
+ 3.8 en [customfield,block_myoverview]
+ 3.8 en [customfiltergrouping,block_myoverview]
+ 3.8 en [customfiltergrouping_nofields,block_myoverview]
+ 3.8 en [nocustomvalue,block_myoverview]