launch peptide viewer, use QSettings

src/gui/peptide_detail_view/peptidewindow.cpp

@@ -158,7 +158,8 @@ void PeptideWindow::chooseDefaultMzDataDir() {
 }
 
 void PeptideWindow::openInPeptideViewer() {
-    QString program = "/home/olivier/eclipse/git/pappsoms-tools/cbuild/src/gui/pt-peptideviewer";
+    QSettings settings;
+    QString program = settings.value("application/peptideviewer", "/usr/bin/pt-peptideviewer").toString();
     QStringList arguments;
     arguments << _p_peptide_match->getPeptideXtpSp().get()->toString() << QString("%1").arg(_p_peptide_match->getCharge()) << _p_peptide_match->getMsRunP()->getFilename() << QString("%1").arg(_p_peptide_match->getScan());