Art by Jesse LottThe must-see shows Jesse Lott: "The Urban Frontier" and Javier de Villota: "DeHumanization Echo" close this Sunday at the Station Museum of Contemporary Art. Lott and de Villota, both based in Houston, share not so much a style as a purpose -- to express a belief in humanism.Lott's "Urban Frontier," all graceful wires and found wood shaped into animals, women and Christ figures, is a jarring juxtaposition to de Villota's "DeHumanization Echo," chaotic, graphic depictions of viol