#352 Problem with selection in Percentile & Histogram GUIs

[Parthee Partheepan]

In both gui we have table widget to specify the
percentiles and bin break points respectively. Now once
the rows are selected, it's impossible to deselect the
rows.

I looked into this problem and cause of the problem is
that, we are using the FormatCellRenderer as Renderer
for the table to format the double values. So we have
to further analyse whether we are not doing some thing
that we should in the FormatCellRenderer.