Add tests on Awardables and Award Emoji

app/assets/javascripts/awards_handler.coffee

app/assets/javascripts/notes.js.coffee

app/controllers/projects/notes_controller.rb

app/helpers/issues_helper.rb

app/models/merge_request.rb

db/schema.rb

features/steps/project/issues/issues.rb

features/steps/project/merge_requests.rb

spec/controllers/projects/issues_controller_spec.rb

spec/factories/award_emoji.rb

spec/features/issues_spec.rb

spec/features/notes_on_merge_requests_spec.rb

spec/models/concerns/awardable_spec.rb

spec/models/concerns/issuable_spec.rb

spec/models/user_spec.rb

spec/services/notes/create_service_spec.rb

spec/services/todo_service_spec.rb

spec/services/toggle_award_emoji_service_spec.rb