migrate dependent:destroy to database

app/models/complaint_reason.rb

app/models/learning_object.rb

app/models/review.rb

app/models/score.rb

app/models/topic.rb

app/models/user_category.rb

db/migrate/20160125124508_create_complaints.rb

db/migrate/20160128123028_create_review_ratings.rb

db/migrate/20160129191739_create_topic_highlights.rb

db/migrate/20160130191533_create_topic_relationships.rb

...rate/20160201135415_create_learning_object_attachments.rb

db/migrate/20160217111317_create_rates.rb

db/migrate/20160222144259_create_score_user_categories.rb