Add i18n labels for exhibit tags which are automatically added

[jeremyf]

In the following code, we are not adding label options for exhibit tags.

spotlight/app/models/spotlight/blacklight_configuration.rb

Lines 315 to 327 in ebed5d6

	def add_exhibit_tags_fields(config)
	# rubocop:disable Style/GuardClause
	unless config.show_fields.include? :exhibit_tags
	config.add_show_field :exhibit_tags, field: config.document_model.solr_field_for_tagger(exhibit),
	link_to_facet: true,
	separator_options: { words_connector: nil, two_words_connector: nil, last_word_connector: nil }
	end
	unless config.facet_fields.include? :exhibit_tags
	config.add_facet_field :exhibit_tags, field: config.document_model.solr_field_for_tagger(exhibit), limit: true
	end
	# rubocop:enable Style/GuardClause
	end

It could be that the lack of labels is not a bug as folks could add to the catalog controller the show and facet fields.

Would the following change be appropriate?

  def add_exhibit_tags_fields(config)
      # rubocop:disable Style/GuardClause
      unless config.show_fields.include? :exhibit_tags
        config.add_show_field(
          :exhibit_tags,
          field: config.document_model.solr_field_for_tagger(exhibit),
          link_to_facet: true,
          separator_options: { words_connector: nil, two_words_connector: nil, last_word_connector: nil },
          label: I18n.t('spotlight.search.fields.facet.exhibit_tags')
        )
      end

      unless config.facet_fields.include? :exhibit_tags
        config.add_facet_field(
          :exhibit_tags,
          field: config.document_model.solr_field_for_tagger(exhibit),
          limit: true,
          label: I18n.t('spotlight.search.fields.facet.exhibit_tags')
        )
      end
      # rubocop:enable Style/GuardClause
    end