Fix missing percentage signs. Closes #1392.

src/previewlistdelegate.h

@@ -65,7 +65,7 @@ class PreviewListDelegate: public QItemDelegate {
           QStyleOptionProgressBarV2 newopt;
           qreal progress = index.data().toDouble()*100.;
           newopt.rect = opt.rect;
-          newopt.text = misc::accurateDoubleToString(progress, 1);
+          newopt.text = misc::accurateDoubleToString(progress, 1) + "%";
           newopt.progress = (int)progress;
           newopt.maximum = 100;
           newopt.minimum = 0;

src/properties/proplistdelegate.h

@@ -78,7 +78,7 @@ public:
         QStyleOptionProgressBarV2 newopt;
         qreal progress = index.data().toDouble()*100.;
         newopt.rect = opt.rect;
-        newopt.text = misc::accurateDoubleToString(progress, 1);
+        newopt.text = misc::accurateDoubleToString(progress, 1) + "%";
         newopt.progress = (int)progress;
         newopt.maximum = 100;
         newopt.minimum = 0;

src/transferlistdelegate.h

@@ -175,7 +175,7 @@ public:
         QStyleOptionProgressBarV2 newopt;
         qreal progress = index.data().toDouble()*100.;        
         newopt.rect = opt.rect;
-        newopt.text = misc::accurateDoubleToString(progress, 1);
+        newopt.text = misc::accurateDoubleToString(progress, 1) + "%";
         newopt.progress = (int)progress;
         newopt.maximum = 100;
         newopt.minimum = 0;