[Qt] add expert section to wallet tab in optionsdialog

src/qt/forms/optionsdialog.ui

@@ -189,26 +189,6 @@
          </item>
         </layout>
        </item>
-       <item>
-        <widget class="QLabel" name="spendZeroConfChangeInfoLabel">
-         <property name="text">
-          <string>If you disable the spending of unconfirmed change, the change from a transaction cannot be used until that transaction has at least one confirmation. This also affects how your balance is computed.</string>
-         </property>
-         <property name="textFormat">
-          <enum>Qt::PlainText</enum>
-         </property>
-         <property name="wordWrap">
-          <bool>true</bool>
-         </property>
-        </widget>
-       </item>
-       <item>
-        <widget class="QCheckBox" name="spendZeroConfChange">
-         <property name="text">
-          <string>&amp;Spend unconfirmed change (experts only)</string>
-         </property>
-        </widget>
-       </item>
        <item>
         <spacer name="verticalSpacer_Wallet">
          <property name="orientation">
@@ -222,6 +202,35 @@
          </property>
         </spacer>
        </item>
+       <item>
+        <widget class="QGroupBox" name="groupBox">
+         <property name="title">
+          <string>Expert</string>
+         </property>
+         <layout class="QVBoxLayout" name="verticalLayout_2">
+          <item>
+           <widget class="QCheckBox" name="coinControlFeatures">
+            <property name="toolTip">
+             <string>Whether to show coin control features or not.</string>
+            </property>
+            <property name="text">
+             <string>Enable coin &amp;control features</string>
+            </property>
+           </widget>
+          </item>
+          <item>
+           <widget class="QCheckBox" name="spendZeroConfChange">
+            <property name="toolTip">
+             <string>If you disable the spending of unconfirmed change, the change from a transaction cannot be used until that transaction has at least one confirmation. This also affects how your balance is computed.</string>
+            </property>
+            <property name="text">
+             <string>&amp;Spend unconfirmed change</string>
+            </property>
+           </widget>
+          </item>
+         </layout>
+        </widget>
+       </item>
       </layout>
      </widget>
      <widget class="QWidget" name="tabNetwork">
@@ -468,16 +477,6 @@
          </property>
         </widget>
        </item>
-       <item>
-        <widget class="QCheckBox" name="coinControlFeatures">
-         <property name="toolTip">
-          <string>Whether to show coin control features or not.</string>
-         </property>
-         <property name="text">
-          <string>Display coin &amp;control features (experts only)</string>
-         </property>
-        </widget>
-       </item>
        <item>
         <spacer name="verticalSpacer_Display">
          <property name="orientation">

src/qt/optionsdialog.cpp

@@ -159,6 +159,7 @@ void OptionsDialog::setMapper()
     /* Wallet */
     mapper->addMapping(ui->transactionFee, OptionsModel::Fee);
     mapper->addMapping(ui->spendZeroConfChange, OptionsModel::SpendZeroConfChange);
+    mapper->addMapping(ui->coinControlFeatures, OptionsModel::CoinControlFeatures);
 
     /* Network */
     mapper->addMapping(ui->mapPortUpnp, OptionsModel::MapPortUPnP);
@@ -178,7 +179,6 @@ void OptionsDialog::setMapper()
     mapper->addMapping(ui->lang, OptionsModel::Language);
     mapper->addMapping(ui->unit, OptionsModel::DisplayUnit);
     mapper->addMapping(ui->displayAddresses, OptionsModel::DisplayAddresses);
-    mapper->addMapping(ui->coinControlFeatures, OptionsModel::CoinControlFeatures);
 }
 
 void OptionsDialog::enableOkButton()