width managed by gconf settings now

added a notification key for the gconf variable window_width, and set the width variable to be based on this key
makes gconf window width variable a float
gets gconf width as a float rather than int
fixes formatting inconsistancies
Merge branch 'master' of https://github.com/mgaut72/guake
Preparing upcoming reborn

Signed-off-by: Gaetan Semet <gaetan@xeberon.net>
Merge branch 'master' of https://github.com/mgaut72/guake into mgaut72-master