How to render an empty header in list form widgets

[Jacopo Cappellato]

Right now, in many form definition, in order to display an empty header, 
the following title is set:

title=""
I'd like to change the behavior of the framework to suppress (don't 
create a cell) the header if the above title is set; is it ok if I 
change the existing form definitions in the following way?

title="${uiLabelMap.CommonEmptyHeader}"

where CommonEmptyHeader=
is blank

What do you think?

Jacopo