Merge pull request #1 from RobertLemmens/production

Code changes + opmaak
Merge pull request #2 from RobertLemmens/production

Code opgeruimt. Multi-drop file support ge-add.
Drag en drop continued. MD5 generation for multiple dropped files is added. A new frame opens with the filenames and results.

TODO - Saving a manifest or appending to a manifest depending on configuration and/or user options.