Fix session facet search to search session_title_ssi.
Change medium facet to have a facet namespaced i18n key so we don't collide w/ show view.
Add SolrResponseTermFrequency module to GroupedSolrResponse and Blacklight::SolrResponse.
Change to using doc_type_ssi instead of doc_type_ssim now that we've changed the unit of discovery.
Update session_title field now that we have a new unit of discovery.
Add div around speaker/(un)spoken text blocks to make sure they don't wrap stragely.
Fix bug with multi-word queries and term frequency.