Adds full text search capabilities.

app/assets/javascripts/ocr_search.js.erb: imports code for hiding/revealing additional snippets.
app/assets/stylesheets/*: adds styling from Curate's codebase.
app/controllers/catalog_controller.rb: adds the all text solr field to both the All Fields search option and the index page.
app/helpers/*: copies and updates the helper code from Curate.
app/indexers/publication_indexer.rb: uses the newly formed class models to index the primary fileset's extracted text.
app/models/file_set.rb: provides convenience method that returns a fileset's extracted_text.
app/models/publication.rb: makes the class aware of its child filesets and, particularly, the primary content FileSet.
app/models/search_builder.rb: carries over the search logic to our default processor chain.
app/views/catalog/_index_list_default.html.erb: a slight refactor.
app/views/catalog/_snippets_more.html.erb: brought over from Curate to process the additional snippets correctly.
config/initializers/blacklight_blacklight_helper_behavior_override.rb: overridden because this newer version of Hyrax delivers the full value of the new solr field without highlighting when an empty search is performed.
config/locales/hyrax.en.yml: adds title to field values in index page.

emory-libraries / dlp-selfdeposit