After years of planning and legal hurdles, officials broke ground Monday on a 33-unit affordable housing project at 1813-15 Church St. “Today, I’m happy because this is an occasion that we should be celebrating,” Councilmember Bobby Burns (5th Ward) said at the Monday afternoon groundbreaking. “We should be celebrating for the simple reason that there are going to be people that this building houses that, but for this housing, would be displace…