were causing this: wrong get_users_by_capability() call and standard scales.
Improved scales restore to observe the 'moodle/course:managescales' cap.
Merged from 19_STABLE
* Use this to fix a question restore bug.
* Replace older code that does something similar with the new test.
* Refactor initialisation of $CFG->siteidentifier into a function. There were about 4 copies of this code ;-)
* New table role_context_levels
* Populate table with defaults on install
* Populate table on upgrade with the same defaults, plus any additional ones needed to ensure all the role assignments already in the database are allowed.
* Change get_assignable_roles to respect these settings.
* UI for these settings on the add/edit role form.
* Save these settings when a role definition is saved.
* If in a context, there are no roles you can assign, display a polite message.
* Back up these settings.
* Restore these settings. When resotring a <=1.9.x backup file, any newly imported roles are set to be assignable at all contextlevels.
Restore not tested because it is broken in HEAD.