fix csv write unicode bug (#199)
fix csv write unicode bug (#199)

using __future__'s unicode_literals breaks the UnicodeWriter wrapper for csv, this is a quick workaround

MPIB/Lagerregal,MPIB/Lagerregal,vIiRuS/Lagerregal,vIiRuS/Lagerregal,MPIB/Lagerregal,vIiRuS/Lagerregal