#377 Feature request: allow the user to define which column is displayed as the chart legend

[Matthias Filter]

Frequently the predefined value used in the visualization nodes as figure legend is not what the user actually wants to display. It would be great if the user could define himself which "column" from the model table will be used as figure legend, e.g. in case of data it would sometimes be better to display the Temperature condition.
Ideally the user could create his own legend by using the functions available in the "StringManipulation" node.