Move Lobid API access from main controller into separate class
Basic access to facets in lobid Elasticsearch index
Faceted search for resource types (`@graph.@type` field), see #12
Drop first three types for faceted search (see #12)
Replace test that expects a specific lobid data state
Use custom, translated labels for types in faceted search (see #12)
Tweak pagination appearance (no rounded corners on both sides)
Show compact result list, move details into separate view (see #14)
Use different icons for document types, add Octicons (#13)
Exclude some types from faceted search, tweak icons and types (#12)
Show all hits as default, not only those with items (see #18)