Test file added
Test file removed.
Data import and export controls added.
Control for data export created.
Export of conten-type data implemented.
Better way to sort languages.
Blank export added.
Export implemented completely.
Help text changed for import.
Export option enumerations renamed.
First version of import implemented (still some todos)
Import summary and error page added.
Error codes can be localized.
Save file to import to a temporary file.
Extensions moved to separate folder.
Methods commented a little bit.
TODO comment removed.
Methods commented.
Bug fixed: Request only deleted entities.
Delete of entities enabled.