CHICAGO — Two boys, ages 14 and 17, have been charged with murder in connection with a fatal shooting outside a North Side high school last month that left one student dead and two others wounded, Chicago Police Department officials announced Wednesday. Around 4 p.m. on Jan. 31, 16-year-old Daveon Gibson was walking with two other Senn High School students in the 1200 block of West Thorndale Avenue when several shooters got out of a vehicle and opened fire, authorities said. Gibson, who lived in the Humboldt Park neighborhood, was pronounced dead a short time later, and the two other victims s…