The emoji categories were modified in the newer versions of the
emoji-data library. Therefore, the category list in $categorysortorder
needs to be updated with the correct category names in order to properly
sort the categories in the generated emoji data file.
The emoji data generator script is enabled to detect inconsistencies
between the emoji category names used in the emoji-data library and the
ones used in Moodle. These inconsistencies should be fixed, as soon as
they are detected upon library upgrade.
