Fix SkillRelUser migration

app/Migrations/Schema/V110/Version110.php

@@ -34,9 +34,9 @@ class Version110 extends AbstractMigrationChamilo
         $this->addSql("CREATE TABLE IF NOT EXISTS c_student_publication_comment (id INT, work_id INT NOT NULL, c_id INT NOT NULL, comment text, file VARCHAR(255), user_id int NOT NULL, sent_at datetime NOT NULL)");
         $this->addSql("CREATE TABLE IF NOT EXISTS c_attendance_calendar_rel_group (iid int NOT NULL auto_increment PRIMARY KEY, id INT, c_id INT NOT NULL, group_id INT NOT NULL, calendar_id INT NOT NULL)");
 
-        //$this->addSql("ALTER TABLE skill_rel_user ADD COLUMN course_id INT NOT NULL DEFAULT 0 AFTER id");
-        //$this->addSql("ALTER TABLE skill_rel_user ADD COLUMN session_id INT NOT NULL DEFAULT 0 AFTER course_id");
-        //$this->addSql("ALTER TABLE skill_rel_user ADD INDEX idx_select_cs (course_id, session_id)");
+        $this->addSql("ALTER TABLE skill_rel_user ADD COLUMN course_id INT NOT NULL DEFAULT 0 AFTER id");
+        $this->addSql("ALTER TABLE skill_rel_user ADD COLUMN session_id INT NOT NULL DEFAULT 0 AFTER course_id");
+        $this->addSql("ALTER TABLE skill_rel_user ADD INDEX idx_select_cs (course_id, session_id)");
 
         $table = $schema->getTable('session');
         if (!$table->hasColumn('description')) {