refs #314, fixed DBus crash because of wrong list type

discussion here: https://dev.vatsim-germany.org/boards/22/topics/2006?r=2015#message-2015
* Fixed CIndexVariantMap
* In the same step added more tests in the DBus sample

src/blackmisc/indexvariantmap.cpp

@@ -107,7 +107,7 @@ namespace BlackMisc
      */
     void CIndexVariantMap::unmarshallFromDbus(const QDBusArgument &argument)
     {
-        QList<int> indexes;
+        QList<CPropertyIndex> indexes;
         QList<CVariant> values;
         argument >> indexes;
         argument >> values;
@@ -129,6 +129,14 @@ namespace BlackMisc
         this->m_values.insert(index, value);
     }
 
+    /*
+     * Add string by literal
+     */
+    void CIndexVariantMap::addValue(const CPropertyIndex &index, const char *str)
+    {
+        this->addValue(index, QString(str));
+    }
+
     /*
      * Register metadata
      */