Set default stock location on old shipments. Fixes #3510
Use update_all to close order adjustments

That would use one single query to update all adjustments

Fixes #3512
Use a hash instead of sql fragment.
Fix broken spec.
Fix migration to run when no tax category set on product.
Use new Google Analytics analytics.js instead of ga.js SDK.
Fix typo in changelog.
Actually mention http://guides.spreecommerce.com in the README.md [Fixes
Depend on Ransack 1.0.0
[backend] Make 'Mail Methods' link highlight as the active link when at mail_methods/edit

Fixes #2961