[SPARKL-35]
- Added support to set default mime type to be used when only one file is set in the ResultFiles of a kettle result or file content is written to a single cell.
[SPARKL-35]
- It is now possible to download the result from a single cell as a file.
- Added the ability to specify the attachment name when downloading a single cell content, single file on kettle result files or zip name (on multiple files from kettle result files).