The name was a relict from the very first day of project structuring,
but this name here makes for much much nicer tab-completing to source
file names...

Wrong (non-interactive) panels were passed to the INIParser. Not grave because the value
would be empty, but still this was fixed. In fact, start removing IDs
from non-interactive panels. They were given in the beginning so that
specific elements could be targeted, but this was never needed. So now
there's less object IDs flying around. There are probably more that will
be cleaned when stumbled upon, until then they do no harm.

Wrong (non-interactive) panels were passed to the INIParser. Not grave because the value
would be empty, but still this was fixed. In fact, start removing IDs
from non-interactive panels. They were given in the beginning so that
specific elements could be targeted, but this was never needed. So now
there's less object IDs flying around. There are probably more that will
be cleaned when stumbled upon, until then they do no harm.

Replacing assignement operators by direct assignement in constructor and some constification

Add the same mechanism of inclusion/exclusion of sections for <options> (Dropdown, Choice, Grid, ...)

re-check on onPropertySet when the value does not actually change.

Add flexibility to Grid panel (auto-choose row/col, rowspan, colspan, safety checks). Only search for MainWindow once for logging, better XML errors.

Display per-item help and tooltip help in Alternative panel, stop the switch to white text when highlighted as default

Formerly INI keys were changed live when changing the value through a
panel, eliminating the need to loop through the panels for output.
However, this introduced more and more intermediate loops (like
disabling child panels of Dropdown, Choice, ... that are not shown) and
gave some headaches when working with missing mandatory values and
similar things. Hence, now we keep the original INI values read from
file as they are and and do loop through the elements at the end to get
the user set values.
Also add a few toolbar buttons and minor changes here and there.

preserve this possibility from the old syntax)

Some comments

Manage suppression of ouput that is not active (e. g. not selected in a dropdown), and start a mockup Workflow element