[Ml-yokadi] new t_list with dynamic width

[Sébastien Renard]

Hello there,

I've just push to master branch a new t_list display algorythm that take care 
of current terminal width.
Here are the basic display rules : 
- only use minimal width needed to display text to make it easy to read for 
people with really large terminal
- shrink title width as needed if it does not fit.

I still have to work the due date field because its size is not predictable and 
it can cause bugs.
Some ideas about that : 
- make width automatic according to max due date width instead of static 
width.
- use a different format according to term size. For short terminal, only 
display relative due date, for large one, display both date and relative date 
(that's what we always do for now).

All that stuff is in master branch and is not intended for the imminent 0.10 
release.

a+
-- 
Sébastien