MDL-55135 competencies: fix capabilities managing course competencies

Capability check in a course was using global competency capabilities 
moodle/competency:competencyview and  moodle/competency:competencymanage 
instead of the course equivalents. Users outside the course context 
could not manage course competencies.

competency/classes/api.php

@@ -4987,8 +4987,9 @@ public static function get_least_proficient_competencies_for_course($courseid, $
         static::require_enabled();
         $coursecontext = context_course::instance($courseid);
 
-        if (!has_any_capability(array('moodle/competency:competencyview', 'moodle/competency:competencymanage'), $coursecontext)) {
-            throw new required_capability_exception($coursecontext, 'moodle/competency:competencyview', 'nopermissions', '');
+        if (!has_any_capability(array('moodle/competency:coursecompetencyview', 'moodle/competency:coursecompetencymanage'),
+                $coursecontext)) {
+            throw new required_capability_exception($coursecontext, 'moodle/competency:coursecompetencyview', 'nopermissions', '');
         }
 
         return user_competency_course::get_least_proficient_competencies_for_course($courseid, $skip, $limit);