Get rid of rails 4 deprecation warnings:
* .scoped has become .all
* implicit table joins need .references
* scopes need ugly lambdas
* get rid of whiny nils. I hated them.
* secret_token is now secret_key_base
Fix test failures caled by Rails 4 upgrade

* Fix weird nag in SectionArranger group by statement somehow caused by rails 4
* Whitelist all accessable 'user' fields in devise 3's param sanitizer
* Omit ActiveRecord::SchemaMigration from seeds_spec leak checking
* Fix test failure caused by an as_json now returning strings instead of symbols