Add ability to inherit custom fields from RailsAdmin::Config::Fields::Association

field.properties instance variable is lost when you configure new custom field
Add json field datatype
try(:abstract_model) did never work. try is not required here, lazymodel will safely return nil if abstract_model didnt exist ...
AFAIK t.message is never equal to either 'delete' or 'new', so remove this condition and always show t.messsage.
user i18n model name as label if object has been destroyed mean while.
fix typo
fix to enable listing of history entries of model names that do not exist anymore.
Mongoid no longer provides old .associations method on model
class, only on instance, so it should be replaced with .relations
Fix spec for Mongoid - mongoid now requires scopes to be procs
Merge pull request #1888 from glebtv/fix-mongoid-4-assoc

Mongoid no longer provides old .associations method on model class
Skip coverage requirement for jRuby because results are inconsistent
Merge pull request #1843 from ideadapt/dashboard-history-view-corrections

Upgrade dashboard history view
Merge remote-tracking branch 'remotes/upstream/master'
change parent class and add test
Add RuboCop
Autocorrect all autocorrectable offenses
Make TODO list of Rubocop offenses to fix
Exclude spec/dummy_app/db/schema.rb
Lock paperclip dependency to version 3.5.2
Bump version to 0.6.1
Merge remote-tracking branch 'remotes/upstream/master'
Fix Rubocop offenses