Allow better configuration of charts for use in publications

[abeham]

The VisualProperties are nice as they allow you to save the visual state, however for every chart you have to implement these anew. I would like to do a few things to every EnhancedChart before using it in a publication:

• Change the text of the axis descriptions and title.
• Change the font size of axis labels, scales and title as they're illegible in a print.
• Define the size of the image in centimeters.
• Define the resolution of the image in DPI.

I don't mind not being able to save this if this is quick to configure.