initial features commit
Merge branch 'master' into features

* master:
  Version bump to v0.42.0
  WCMS-288 Mounted uploader for banner on academic publisher
  changed empty to blank
  Added a method to ensure that all groupings are parameterized
  Fix failing specs
  Only validate Book#isbn on create.
  Renaming some things to clarify their function.
  Making a few more objects mettable.
  Changing TopicTag to MetaData
  Starting to add topic tags for grouping content. I need to test this out in some of our publishers to see how this works practically.
fixed slug not setting properly.
Added metadata to feature
no message
beginnings of sidekiq with aasm_state
Added tests for feature and custom validation for end_publish
Adding the permissions subject to features
Added spec for the custom validation on a feature.
Merge pull request #124 from biola/features

Features