[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).
[SPARKL-35]
- Refactored KettleOutput.Configuration.
- Added mime type to json and resultOnly output type http responses.
- Minor refactoring to code ordering and some variable / class names.
Merge pull request #7 from graimundo/master

[SPARKL-35]
[SPARKL-36]
- Changed KettleOutput classes construction to parameterless constructor + setter injection.
- Added the possibility to define default value in ktr / kjb for downloading (or not) a single file / single cell content.
[SPARKL-36]
- Added the ability to define a default value for the outputType in the ktr / kjb of a kettle element.
[SPARKL-36]
- One can now specify the output step / jobEntry name to be used by default by a kettle element.
[CLEANUP]
- Removed unused imports.
- Added/Removed region comments
Merge pull request #8 from graimundo/master

[SPARKL-36]