Updating guake icon and now we have a hicolor themed icon

This commit also updates some files placed in the project by autotools
and some references to the old icon file.
Fixing a typo in the guake-prefs.desktop file (Closes: #448)
Adding a new icon for the gnome-prefs program
Setting the program name with GObject (Closes: #414)
Guake overlaped the second screen in a dual-monitor setup with a side panel
Guake did not restored to its original size after fullscreen.
Fix some french mistakes/typos
Add the missing "System" category required by FDO menu specification
Do not install the system-wide autostart file

It is easy to make guake auto start through DE settings if this file is not
installed, but it is hard to disable the auto start through DE settings if this
file is installed.

Also it is confusing to disable the autostart in GNOME. If one user uses both
GNOME and KDE, he/she probably would like to use and auto start guake
when using GNOME , or yakuake when using KDE.
Merge pull request #2 from adaptee/fdo-menu-categories

Add the missing "System" category required by FDO menu specification
Merge pull request #3 from adaptee/remove-xdg-autostart

Do not install the autostart file
Merge pull request #4 from sylvestre/master

Two first commits to remove my debian patches
(Closes: #230,#403,#258,#371)
Fix for missing localization of tree items in Shortcuts tab of preferences window.
Merge remote-tracking branch 'eMPee584/master'
Finishing to merge some things about the fullscreen status
Fix for a small problem of resizing main window after fullscreen
Updating NEWS file
Updating copyright note
bump to the 0.4.4 version