Make sure that nothing is done when no new dataset is loaded.
Change the name of the parameter list.

Transformation is the wrong name for a parameter list.
Refactor.
Refactor.
Add filename to metadata of transformation.
Do not reset the visualizations when loading new image data.

Should be moved to a separate method that is only called when the user
loads a new dataset through the interface.
When activating a transformation at a certain index, load the corresponding dataset.