fixing underestimation of FDR : this should be doubled, prior to Joshua et al 2007

src/gui/project_view/projectwindow.cpp

@@ -287,11 +287,11 @@ ProjectWindow::computeFdr()
             identification_group->countDecoyPeptideMassSample(state);
         }
       ui->protein_fdr_label->setText(QString("%1 %").arg(
-        QString::number((false_prot / total_prot) * 100.0, 'f', 2)));
-      ui->peptide_fdr_label->setText(QString("%1 %").arg(
-        QString::number((false_peptide / total_peptide) * 100.0, 'f', 2)));
+        QString::number(((false_prot * 2) / total_prot) * 100.0, 'f', 2)));
+      ui->peptide_fdr_label->setText(QString("%1 %").arg(QString::number(
+        ((false_peptide * 2) / total_peptide) * 100.0, 'f', 2)));
       ui->psm_fdr_label->setText(QString("%1 %").arg(
-        QString::number((false_psm / total_psm) * 100.0, 'f', 2)));
+        QString::number(((false_psm * 2) / total_psm) * 100.0, 'f', 2)));
     }
   catch(pappso::PappsoException exception_pappso)
     {