Wide Skin is a sub-skin of Vector which hides the side bar. It works much like Hide Vector sidebar but instead of of interactively hiding and showing the sidebar, its links are transferred to the vector menu, a new Favicon menu, and the footer. It's particularly useful for narrow screens.
To enable it you need to add
importScript("User:Blue-Haired Lawyer/Wide Skin.js");
to your vector.js file and
#mw-panel { visibility: hidden !important; }
#mw-head-base { margin-left: 0 !important; }
#content { margin-left: 0 !important; }
#left-navigation { margin-left: 1em !important; }
#footer { margin-left: 0 !important; }
to your vector.css file.