some more cleanup, and new clang-tidy configuration with all obligatory tests

GUI/Support/Data/ComboProperty.cpp

@@ -74,7 +74,7 @@ QStringList ComboProperty::values() const
 
 void ComboProperty::setValues(const QStringList& values)
 {
-    ASSERT(values.size());
+    ASSERT(!values.empty());
     QString current = currentValue();
     m_values = values;
     setCurrentIndex(m_values.contains(current) ? m_values.indexOf(current) : 0);