followup on bug 114
append path bug 114
save settings in QSettings (in stead of .qucs/qucsrc)
implemented QSettings in qucsattennuator
QSettings
fixed simmessage state (Running is constant)
changed QucsEdit to QSettings
qucs-attenuator, qucs-edit, qucs-filter, qucs-transcalc ported to QSettings
Qucs Home directory can now be edited in Application settings, as well as octave bin dir
accepting QUCSDIR again, if not defined qucs paths are derived from the executable location