Updates to advanced search. refs #582

- Removed AdvancedCatalogController and made advanced search
  a part of plain CatalogController
- Updated search fields to include numbers (ISSN, ISBN, DOI) and
  journal title. Journal title is searching an _s solr field and
  should be changed to search a _t field when one becomes available.
- Disabled "advanced search" link when on advanced search page