UI Presets and Shelf Tabs, Full Horizontal Width?

[3d_4]

Is there a way to make the bottom UI section span the entire workspace like in this image

http://support.allegorithmic.com/documentation/download/attachments/28737558/Capture%20d%27e%3Fcran%202014-02-05%2018.35.37.png?version=1&modificationDate=1391596603000&api=v2

In the current version 0.3.0 the Presets and Shelf tabs are limited to below the viewport only.  I would like to expand them go all the way across the application window.

Thanks
M