Convert boolean settings values

The db table only stores strings

src/settings.js

@@ -670,6 +670,10 @@ function getAll(callback) {
         var result = _.extend({ }, gDefaults);
         settings.forEach(function (setting) { result[setting.name] = setting.value; });
 
+        // convert booleans
+        settings[exports.DEVELOPER_MODE_KEY] = !!settings[exports.DEVELOPER_MODE_KEY];
+        settings[exports.DYNAMIC_DNS_KEY] = !!settings[exports.DYNAMIC_DNS_KEY];
+
         callback(null, result);
     });
 }