fix country_order_stats, add ticket codes
fix country_order_stats, add ticket codes

PythonSanSebastian/ep-tools,EuroPython/ep-tools,PythonSanSebastian/ep-tools,PythonSanSebastian/ep-tools,EuroPython/ep-tools,PythonSanSebastian/ep-tools,EuroPython/ep-tools,EuroPython/ep-tools