Rather than Config asking its (owning) ViewStep what the title
is -- all existing implementations have a prettyName() for that --
move the title into Config and re-do-the ViewSteps to use it.
Rename init() to something meaningful.
Config classes, which intend to be shared between widgets-
and QML-based view-steps, should not tie closely to internals.
None of the ParserStatus methods are used in a meaningful
way (init() can be called by the view step).
(This assertion may be dialed back if the Config object is used
in the summary ViewStep, which will want to get at the widget
pointers, but that's for later)
initial work done by Nitrux/Camilo Higuita in 2020, reflected in license headers
C++ adjusted to make it build & work
as noted in the inline comments e80618ef1c
there are quite a few errors in the C++, but it builds, runs and shows the correct output
