Merge branch 'release-2.1.19' into develop
added delayed job documentation to README
Merge pull request #20 from dpla/7508-delayed-job-documentation

Add delayed job documentation to README (7508)
Adding pry-rails to Gemfile for debugging

Pry is a powerful interactive console that makes it easy to browse
source and debug. See: http://pryrepl.org/
Merge pull request #23 from dpla/pry-rails

Adding pry-rails to Gemfile for debugging
Remove unused HomeController, view, and test

The controller has been removed, there was no route to it, and the
relevant URL was redirected elsewhere some months ago.
Travis: use Elasticsearch 0.90.13; other minor tweaks

* Change notifications to default to commit author's email
* By default, run tests on all the branches
* Add ElasticSearch status reports to V1's Cucumber setup hooks
Merge pull request #22 from dpla/test-cleanup

Remove unimplemented HomeController and test
Escape forward slash (7695)
Merge pull request #25 from dpla/7694-escape-forward-slash

Escape forward slash (#7695)
Version 2.1.20
Merge branch 'release-2.1.20'