[Unity] Add a quick launch of the LibreOffice panel

Although Unity not have a tool for creating shortcuts similar to the application launcher for example, we do it ourselves getting into the guts (?) system.

We can create a quicklaunch of LibreOffice icon from LibreOffice Writer when you right click the icon should look like this.

From a terminal the following command tipeamos
gksu gedit /usr/share/applications/