add hed to dek padding

[austinclemens]

removed the 1.1 hard coded parameter on this so add something else and throw it into the y calc in playfair js around line 884 (below)

var dek=snapobj.text(chartobject.x+chartobject.header.header_leftpad,hed_coords.y2,lines).attr({'font-family':chartobject.title_text.dekface,'font-size':dekfontsize,'font-weight':chartobject.title_text.dekweight,dy:'0.3em',ident:'dek',fill:chartobject.title_text.dektextfill,colorchange:'fill',context:'text_context_menu'})

[austinclemens]

also note to source padding