ANGE ABOA and LOUCOUMANE COULIBALY  IVORY Coast is preparing for the return of former President Laurent Gbagbo today, a move that his supporters and the government hope will help ease tensions that have hung over the country since his arrest a decade ago. Supporters have been buying party memorabilia such as scarves, pouches and garments bearing Gbagbo's image in the Yopougon district of Abidjan, considered his political stronghold, since his return was confirmed on May 31. The government of President Alassane Ouattara, which initially objected to Gbago's party announcing his return date without official approval, has accepted the plan as…