Author: Jetha Chan
MDL-47980 gradebook: add labels and legends missing from single view
http://git.moodle.org/gw?p=moodle.git;a=commit;h=dd01789b4f06c0f2aca6bcb59d1819bee3426e13
http://github.com/moodle/moodle/commit/dd01789b4f06c0f2aca6bcb59d1819bee3426e13
+ 2.8 en [bulkappliesto,gradereport_singleview]
+ 2.8 en [bulkinsertvalue,gradereport_singleview]
+ 2.8 en [bulklegend,gradereport_singleview]
+ 2.8 en [bulkperform,gradereport_singleview]
- 2.8 en [bulkinsertgrade,gradereport_singleview]