When Joseph E. Kolar joined the Bohemian Lawyers’ Association of Chicago in 2002 at age 42, he was one of the youngest members in the organization.Since then, the group has taken on more younger members. Kolar, who was installed as BLA president on Thursday at the Riverside Golf Club, said he wants to maintain that trend.“I would like to continue to get new members, especially young members, to join the association so we can keep it going,” said Kolar, who is a senior attorney at Romanucci & Blandin …