#417 - added severity per month and severity per month stacked charts.
#417 - added severity per month and severity per month stacked charts.

OmerSchechter/anyway,yosinv/anyway,OmerSchechter/anyway,HamutalCohen3/anyway,boazin/anyway,HamutalCohen3/anyway,omerxx/anyway,hasadna/anyway,OmerSchechter/anyway,hasadna/anyway,boazin/anyway,boazin/anyway,omerxx/anyway,HamutalCohen3/anyway,hasadna/anyway,hasadna/anyway,yosinv/anyway,yosinv/anyway,omerxx/anyway