fixes bug 1311148 - Can't Clear Headers field in static page edits. (#773)
fixes bug 1311148 - Can't Clear Headers field in static page edits. (#773)


mozilla/airmozilla,mozilla/airmozilla,mozilla/airmozilla,blossomica/airmozilla,blossomica/airmozilla,blossomica/airmozilla,blossomica/airmozilla,mozilla/airmozilla