add currency find by code and unit find by apprevation
update find by abbrevation
fix get unit
add security to product bundle
add security interface to attribute controller
Merge pull request #74 from sulu-cmf/feature/security

add security to product bundle
rename to returnAsEntity
fix merge conflicts
Merge pull request #68 from sulu-cmf/feature/add-currency-unit-by-loader

add currency find by code and unit find by apprevation
Merge branch 'develop' of git://github.com/sulu-cmf/SuluProductBundle into feature/archivedproduct
Implemented publish workflow