Content > Link Lists > "Footer Logo"
The logo displays at a maximum width of 290px and will scale accordingly.
Content > Link Lists > "Social Links"
The custom icons can be created by entering a custom class in the icon class field. A full list of available icons can be found at http://mk031.monkpreview.com/_assets/fonts/mk031/ (substitute your url for http://mk031.monkpreview.com).