Vertical mixer window

Hi here,
I've review the musescore mixer to put track horizontaly.
I've done it on musescore 2.0 developpement build 4330M on kubuntu 10.04
I think it's a better way to optimize screen size because with is higher than height on most screen

It could be a nice stuff to add option in the preferences window to select either horizontal or vertical mixer.
I've posted files here :
http://musescore-developer.685061.n2.nabble.com/Vertical-mixer-view-td6…

I hope it can help...

PS : I'm not sure to be in the right forum section :-s