Changing the width or height of a (right or bottom positioned)wibox,
after it was initialized, to a value different than used when it was
created would leave the wibox in a wrong position. Position was off by
as many pixels as the difference between the old and the new
value. Now every wibox is repositioned to reflect this new setup.
Signed-off-by: Adrian C. (anrxc) <anrxc@sysphere.org>
Signed-off-by: Julien Danjou <julien@danjou.info>