Remove duplicate summary section in  file and image search results views.
Add MARC/MODS processing to summary accordion section (and fallback on index data).
Merge pull request #408 from sul-dlss/subject-toggle

Search Results Summary Accordion Update
rename google preview div from btn-preview to google-preview
Merge pull request #413 from sul-dlss/btn-preview

Rename google preview div from btn-preview to google-preview
Adjust heading levels and style changes
Add typography customization via bootstrap variables
Fix for gallery title overflow, updates to font style