Faceted search complete

Finished the javascript facet checkbox code. Now filters can be applied
to the search query from the results page.
Result Pagination

Paginate the query results using solrpaginate and
django-bootstrap-pagination package.
Alternate ID search

added alternate book ID field to general search index.
Book detail page

Each book in the search results in now a link to a page with more
details about the book. Might be nice to integrate diva on these book
pages. Also modified the look-and-feel of the results page. Currently
the results just show the book title and description.