I'm not sure if this belongs to core or to documentation, however, we should use the mitk::IOUtil helper class inside all our examples. It is very easy to load/save data with it and will make the tutorials even shorter and better readable for beginners.
Also a nice easy todo for easy bugsquashing party.
After talking to Caspar about proper placement of an introduction to the util, we decided create a new section "How To" that is parallel to "Tutorials" and will deal with small subjects and can be used as a quick reference, while "Tutorials" will contain larger contexts that require some systematic work.
IOUtil will be the first entry in the how to, and the necessary structure will be added in this bug as well.
Preliminary changes pushed in the above branch. Example code still requires testing before merged into master.