Add DigitalCollection mixin to identify when a SolrDocument is a digital collection.
Merge pull request #145 from sul-dlss/digital-collection

Add simple mixin to identify digital collections based on collection_type
Add simple mixin to identify collection membership.
Merge pull request #148 from sul-dlss/collection-members

Add simple mixin to identify collection membership.
renames hoover archive constants and image
Merge pull request #151 from sul-dlss/hoover-archive

renames hoover archive constants and image
Add DisplayType concern to SolrDocument to identify which partial to display.
Override BlacklightHelper #document_partial_name to use SolrDocument#display_type.
Move index/show partial suffix to marc.
Merge pull request #149 from sul-dlss/object-behaviors

Add facility for object specific behaviors
Add Google Book data to search results (cover image) and record view (cover image and links)
Consolidate two online access panels to one