Working towards a JDBI backed store...
Continue JDBI work
Adding Intellij IDEA files to gitignore
Convenience script to migrate the DB
Stop passing around the tenant everywhere and retrieve it from context
instead
Continue JDBI move :
- Refactored the authorization module to have class and method level
  annotations instead of field level
- Deleted what remained of the DataNucleus module
More API cleansing
Exception clean-up + stop failing so hard when APIs are misused
Working version of product and category update
API to move categories one relative to another
Support for ordering of categories and products