Fixes nested transactions for catalog test data which is not supported by MySQL
Merge https://github.com/Arcavias/arcavias-core
Streamlines error messages and PayPal Express provider
Updates translation files from Transifex
Improves release target in phing file
Updates binary translation files
Adds minified JS files so they are distributed via composer
Merge pull request #401 from nsendetzky/master

Updates translations, fixes nested transaction and adds minified JS files