[UI] Some standard (old) Bitcoin icons beautified

src/qt/bitcoingui.cpp

@@ -391,10 +391,12 @@ void BitcoinGUI::createActions()
     usedReceivingAddressesAction = new QAction(QIcon(":/icons/" + theme + "/address-book"), tr("&Receiving addresses..."), this);
     usedReceivingAddressesAction->setStatusTip(tr("Show the list of used receiving addresses and labels"));
 
-    openAction = new QAction(QIcon(":/icons/" + theme + "/open"), tr("Open &URI..."), this);
+//    openAction = new QAction(QIcon(":/icons/" + theme + "/open"), tr("Open &URI..."), this);
+    openAction = new QAction(QApplication::style()->standardIcon(QStyle::SP_DirOpenIcon), tr("Open &URI..."), this);
+
     openAction->setStatusTip(tr("Open a dash: URI or payment request"));
 
-    showHelpMessageAction = new QAction(QIcon(":/icons/" + theme + "/info"), tr("&Command-line options"), this);
+    showHelpMessageAction = new QAction(QApplication::style()->standardIcon(QStyle::SP_MessageBoxInformation), tr("&Command-line options"), this);
     showHelpMessageAction->setMenuRole(QAction::NoRole);
     showHelpMessageAction->setStatusTip(tr("Show the Dash Core help message to get a list with possible Dash command-line options"));