more codeclimate fixes

lib/emitter/tests/AssignmentGradedTest.php

lib/emitter/tests/EventTest.php

lib/expander/docs/examples/FeedbackSubitted.json

lib/expander/src/Events/AssignmentGraded.php

lib/expander/src/Events/AttemptEvent.php

lib/expander/src/Events/ScormLaunched.php

lib/expander/tests/EventTest.php

lib/translator/src/Controller.php

lib/translator/tests/AttemptStartedTest.php

lib/translator/tests/CourseCompletedTest.php

lib/translator/tests/DiscussionViewedTest.php

lib/translator/tests/EventTest.php

lib/translator/tests/FeedbackSubmittedTest.php

lib/translator/tests/ModuleViewedTest.php