[turba] composite fields look editable in Firefox

[liamr at umich.edu]

> At least in bluewhite, but I'm pretty sure this is in the base CSS,
> composite fields have a darker grey background.

If we wanted to further differentiate, what would the appropriate CSS  
element be?

What do you all think about only displaying the composite field on the  
"view" screen, and the component fields in the "edit" screen?   
Otherwise, you've got redundant information..

Liam