It’s a much different atmosphere that greets Poliça as they take the stage at the Button Factory tonight. For one thing, this venue is considerably roomier than Whelan’s, the location of their last visit in March 2013. For another, they managed to avoid being messed up by the ferry journey. Battling nausea and general shakiness, they made the best of an unwanted situation. Tonight, however, they come out fighting. The band – Channy Leaneagh on vocals, Chris Bierden on bass & dual drummers Ben Ivascu and Drew Christopherson – are a force to be reckoned with on stage, and the increased…