fixed silent mode

src/qt/forms/optionsdialog.ui

@@ -23,7 +23,7 @@
       <enum>QTabWidget::North</enum>
      </property>
      <property name="currentIndex">
-      <number>0</number>
+      <number>2</number>
      </property>
      <widget class="QWidget" name="tabMain">
       <attribute name="title">
@@ -285,6 +285,16 @@
          </property>
         </widget>
        </item>
+       <item>
+        <widget class="QCheckBox" name="silentMode">
+         <property name="toolTip">
+          <string>Suppress notifications and tray animations</string>
+         </property>
+         <property name="text">
+          <string>Silent mode</string>
+         </property>
+        </widget>
+       </item>
        <item>
         <spacer name="verticalSpacer_Window">
          <property name="orientation">

src/qt/optionsdialog.cpp

@@ -156,7 +156,7 @@ void OptionsDialog::setMapper()
     mapper->addMapping(ui->minimizeToTray, OptionsModel::MinimizeToTray);
     mapper->addMapping(ui->minimizeOnClose, OptionsModel::MinimizeOnClose);
 #endif
-  //  mapper->addMapping(ui->silentMode, OptionsModel::SilentMode);
+    mapper->addMapping(ui->silentMode, OptionsModel::SilentMode);
 
     /* Display */
     mapper->addMapping(ui->lang, OptionsModel::Language);