set default theme to dark

src/settings.cpp

@@ -230,7 +230,7 @@ void Settings::set_currency_name(QString currency_name) {
 
 QString Settings::get_theme_name() {
     // Load from the QT Settings.
-    return QSettings().value("options/theme_name", false).toString();
+    return QSettings().value("options/theme_name", "dark").toString();
 }
 
 void Settings::set_theme_name(QString theme_name) {

src/settings.ui

@@ -95,6 +95,11 @@
          <verstretch>0</verstretch>
         </sizepolicy>
        </property>
+       <item>
+        <property name="text">
+         <string>dark</string>
+        </property>
+       </item>
        <item>
         <property name="text">
          <string>default</string>
@@ -110,11 +115,6 @@
          <string>light</string>
         </property>
        </item>
-       <item>
-        <property name="text">
-         <string>dark</string>
-        </property>
-       </item>
        <item>
         <property name="text">
          <string>midnight</string>