Toolbar: query statistics should indicate placing of cells headers

[rpbouman]

The rows and columns indicators in the toolbar only display the number of tuples, but calls it rows and columns.
This may be confusing, as the actual, physical number of rows/columns is also determined by the number of cells and their placement.

For example the screenshot below indicates there are 28 columns, but in reality there are 28x2 physical columns because there are 2 cells items which are placed on the columns axis.

would be cool if the indicators would somehow make this clear.