Add i18n support.
Add i18n support.

PyBossa/app-flickrperson,Skytim/TEGEconomicTest,Skytim/TEGEconomicTest,pgiraud/app-flickrperson,pgiraud/app-flickrperson,PyBossa/app-flickrperson,Skytim/TEGEconomicTest,PyBossa/app-flickrperson,pgiraud/app-flickrperson