update search and migration

app/controllers/application_controller.rb

app/controllers/concerns/followable_controller.rb

app/controllers/concerns/reviewable_controller.rb

app/controllers/concerns/sociable_controller.rb

app/controllers/v1/collections_controller.rb

app/controllers/v1/institutions_controller.rb

app/controllers/v1/languages_controller.rb

app/controllers/v1/learning_objects/chunks_controller.rb

app/controllers/v1/learning_objects/uploads_controller.rb

app/controllers/v1/learning_objects_controller.rb

app/controllers/v1/mime_types_controller.rb

app/controllers/v1/object_types_controller.rb

app/controllers/v1/packages_controller.rb

app/controllers/v1/reviews_controller.rb

app/controllers/v1/roles_controller.rb

app/controllers/v1/users/bookmarks_controller.rb

app/controllers/v1/users_controller.rb

app/controllers/v1/versions_controller.rb

app/models/search.rb

app/services/dspace_service.rb