This April, city voters will be asked whether to devote $60 million to Major League Soccer stadium planned for downtown St. Louis, thanks to members of the Board of Aldermen who insisted that any public financing come with a public vote.But today, the Board is poised to approve an even bigger expenditure — $105 million to renovate and upgrade the city's hockey arena, Scottrade Center. Unlike the MLS stadium, the plan for Scottrade does not include a public vote.…