Manually entering anything other than ${inifile} was preventing the
simulation from running (the ini file could not be found anymore), so
for now this possibility has been removed (commented out in the XML). At
some point, we could decide to re-implement this feature but we would
need to make sure it works fine (so the simulation really runs from the
right path and the inif ile would be transparently loaded into the
configuration panel. Adding a file selector would almost be mandatory as
well as the possibility to drag n drop files into this entry widget)