fixed several 'retina display' images and added a bunch more (though just from upscaling the normal ones; might be nice to have 'em redrawn at a real higher resolution)

Jim
Ramirez
Roy
Joe
Rob
Dan
Tom
Ernesto
Douglas
sm_mario
Jose
Francisco
Brian
Cooper
Salvador
Javier
Ara
Cinzia
Rafael
Claudio
Franzo
Juan