Zoom and Contract buttons for chart module

["Mohan Yellayi" <myellayi@xxxx>]

Hi Tomasz,
 
At some point, will it be possible to have2 
separate buttons for Zoom and Contract ( + / - ). Then it will be a one hand 
operation to zoom and unzoom operations in the chart module. Right now I have to 
use Shift <-> for contaction.
 
thanks
 
Mohan