Added logo to settings. Small bugfixes.

core/exprevaluator.cpp

@@ -63,7 +63,13 @@ bool ExprEvaluator::evaluate(QObject *object, const QString &exp)
         QString oper;
         QVariant cond;
         parseExpr(exp, value, oper, cond, object);
-        return m_operations[oper](value, cond);
+
+        if (cond.isValid())
+        {
+            return m_operations[oper](value, cond);
+        }
+
+        return true;
     }
 }
 
@@ -87,6 +93,10 @@ void ExprEvaluator::parseExpr(const QString &exp, QVariant &value, QString &oper
     QStringList expCat = exp.trimmed().split(" ");
     value = object->property(expCat[0].toStdString().c_str());
     oper = expCat[1];
-    condition = expCat[2].replace("%20", " ");
+
+    if (expCat.size() > 2)
+    {
+        condition = expCat[2].replace("%20", " ");
+    }
 }