- Added new constant DEFAULT_FORMAT
- ERROR and SUCCESS constant values are the same of EXIT_ERROR
and EXIT_SUCCESS
- public method convert parameter format does not have a default
value anymore
- Added use import of ZipArchive
- libraries/DocumentLib: removed unused variables
- Added new library application/libraries/DocsboxLib.php to manage document conversion using docsbox
- Added new config file application/config/docsbox.php
- Integrated DocsboxLib into include/dokument_export.class.php