Rails 4 upgrade! Tests are running but not passing. Changes:
* update a lot of gems
* update application.rb for rails 4
* added config.eager_load to the environment files
* set config.enforce_available_locales to 'false'
* updated conditions hashes on has_many relations
* took out modernizr (maybe we don't need it?)
Add Rails 4 schema
Clean up Guardfile
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