* Add script to transform language .po files to the expected JSON format for each built JS file
* Merge in updated language packs
* Ignore languages file in bin
* Update changelog, bump version to 1.4.0-rc
* Update languages to language packs at 100% for v1.3.1
* Update readme with button PR
* Add note about featured product edit mode
* Update version number
* Add a missing bug fix to the changelog