Adds full-text searching to Lux sites.

[bwatson78]

• app/assets/*, app/helpers/newspaper_works/newspaper_works_helper_behavior.rb, app/models/search_builder.rb, app/views/catalog/_snippets_more.html.erb, lib/newspaper_works/highlight_search_params.rb: imports code from the curate implementation.
• app/controllers/catalog_controller.rb: adds all_text_tsimv field to search results and search options.
• app/helpers/additional_catalog_helper.rb: includes imported method into appropriate module.
• config/locales/blacklight.en.yml: imports localization from curate code, but changes the label verbiage per request.
• spec/*: updates expectations.
• spec/spec_helper.rb: sidesteps new webdriver Chrome behavior locally.

[bwatson78]

[abelemlih]

@bwatson78 The full text search functionality in Curate currently supports keyword highlighting when a search keyword matches the full text, as seen below:

Could you test whether the changes you added support keyword highlighting for full text search too?

[bwatson78]

@abelemlih Pointed the css to the right element class.

[bwatson78]