Remove reference to window from utils by using the same test for parseJson as stringifyJson
Remove reference to window from utils by using the same test for parseJson as stringifyJson

xeronith/knockout,getshuvo/knockout,cgourlay/knockout,Sir0xb/knockout,martijnwetering/knockout,Sir0xb/knockout,cgourlay/knockout,bago/knockout,pianove/knockout,skyh/knockout,brianmhunt/knockout,JesseQin/knockout,mattbalmer/knuckles,stonegithubs/knockout,DekeYan/knockout,pianove/knockout,ErikSchierboom/knockout,moonpyk/knockout,stonegithubs/knockout,xeronith/knockout,brianmhunt/knockout,hitesh97/knockout,mattbalmer/knuckles,martijnwetering/knockout,youprofit/knockout,gwokudasam/knockout,JesseQin/knockout,youprofit/knockout,DekeYan/knockout,hitesh97/knockout,skyh/knockout,ErikSchierboom/knockout,bago/knockout,moonpyk/knockout,getshuvo/knockout,gwokudasam/knockout