Added date hyerarchy to filter task errors by date
Added date hyerarchy to filter task errors by date

cga-harvard/hypermap,cga-harvard/HHypermap,jmwenda/hypermap,cga-harvard/HHypermap,cga-harvard/HHypermap,cga-harvard/hypermap,jmwenda/hypermap,jmwenda/hypermap,cga-harvard/HHypermap,jmwenda/hypermap,cga-harvard/hypermap,cga-harvard/hypermap