move pry related gem inclusions so that they're available in dev and test environments.  fix dev and testing deployment configs to exclude the right things from what they bundle.
upgrade rails to get upgrades for it's sprockets and actionpack dependencies, to not be on versions with known vulnerabilities
include squash in test
squash fix, try 2
squash fix, try 3
ARGO-308: upgrade dor-services to get a version that doesn't write adminPolicy tag to identityMetadata datastream
Test data for symphony records
Two new facets: Source and Empties

Source essentially groups has_model_s values.
Empties is to be expanded with additional targets of interest.

See https://github.com/projectblacklight/blacklight/issues/995 for why
the empty values cannot (currently) go in the same group as the facet
values.
Remove period from 2 labels
Change tests, labels and other dialogs to remove period from "Admin."