ELIS-8714 Changed calls for deprecated get_context_instance

Author: Marko Vidberg

addinstance.php

@@ -30,7 +30,7 @@
 $id = required_param('id', PARAM_INT);
 
 $course = $DB->get_record('course', array('id'=>$id), '*', MUST_EXIST);
-$context = get_context_instance(CONTEXT_COURSE, $course->id, MUST_EXIST);
+$context = context_course::instance($course->id, MUST_EXIST);
 
 require_login($course);
 require_capability('enrol/elis:config', $context);

edit.php

@@ -31,7 +31,7 @@
 $courseid = required_param('courseid', PARAM_INT);
 
 $course = $DB->get_record('course', array('id'=>$courseid), '*', MUST_EXIST);
-$context = get_context_instance(CONTEXT_COURSE, $course->id, MUST_EXIST);
+$context = context_course::instance($course->id, MUST_EXIST);
 
 require_login($course);
 require_capability('enrol/elis:config', $context);

unenroluser.php

@@ -53,7 +53,7 @@
 }
 
 require_login($course);
-require_capability("enrol/elis:unenrol", get_context_instance(CONTEXT_COURSE, $course->id, MUST_EXIST));
+require_capability("enrol/elis:unenrol", context_course::instance($course->id, MUST_EXIST));
 
 $manager = new course_enrolment_manager($PAGE, $course, $filter);
 $table = new course_enrolment_users_table($manager, $PAGE);