Un-pend a test for catalog URLs with slashes in the document ID

Ref #911

Solr documents with a slash in the ID seem to route correctly
without additional changes now. I tested by adding a document to
the index and then checking its catalog URL; Rails's link_to
seems to automatically generate a link with an encoded slash.

Unfortunately this does not apply to a period, so full URLs won't
work.

Author: thatbudakguy

spec/routing/catalog_routing_spec.rb

@@ -54,7 +54,6 @@
       end
 
       it "routes ids with a literal '/" do
-        skip "This works if you configure your routing to have very liberal constraints on :id.. not sure how to go about testing it though"
         expect(get: solr_document_path(SolrDocument.new(id: 'and/or'))).to route_to(controller: 'catalog', action: 'show', id: 'and/or')
       end
     end