update to latest version of Rails
update rake tasks for tests can run in master branch
update solr.yml.example file too
Add new results view 'Detailed' that shows more metadata fields
Enable sorting by title and source id in search results
Change sort dropdown label to 'identifier' from 'source id'
show Untitled instead of druid when no title is present
Merge branch 'master' of https://github.com/sul-dlss/revs
Merge diverged master branch changes into develop branch