QtUI code cleanup / comment improvements

src/qt/overviewpage.cpp

@@ -74,7 +74,7 @@ public:
         painter->drawText(amountRect, Qt::AlignRight|Qt::AlignVCenter, amountText);
 
         painter->setPen(option.palette.color(QPalette::Text));
-        painter->drawText(amountRect, Qt::AlignLeft|Qt::AlignVCenter, GUIUtil::DateTimeStr(date));
+        painter->drawText(amountRect, Qt::AlignLeft|Qt::AlignVCenter, GUIUtil::dateTimeStr(date));
 
         painter->restore();
     }