[dev] Order by Thread

[Chuck Hagenbuch]

Quoting Federico Giannici <giannici@neomedia.it>:

> Hummm...
> The right place should be in the columns header...
> What about adding a "Thread" link aligned to the RIGHT of the "Object"
> column?

I originally had this thought as well, however, it would either be an 
empty column or really throw off the indentation graphics by seperating 
them from the subject.

I just committed a change such that the Subject column is a toggle between 
Thread and Subject, with whichever is active emphasized. Does this make 
sense for you?

-chuck

--
Charles Hagenbuch, <chuck@horde.org>
"A dream which helps you to live your reality with dignity
 and justice is a good dream." - Tariq Ramadan