fix async file upload to Pages in Firefox
fix async file upload to Pages in Firefox

Firefox needs a "name" attribute to reference an iframe, for
some reason it doesn't work with an ID.

nfredrik/teambox,alx/teambox,irfanah/teambox,crewmate/crewmate,teambox/teambox,wesbillman/projects,teambox/teambox,alx/teambox,rahouldatta/teambox,crewmate/crewmate,irfanah/teambox,codeforeurope/samenspel,rahouldatta/teambox,vveliev/teambox,vveliev/teambox,vveliev/teambox,codeforeurope/samenspel,vveliev/teambox,rahouldatta/teambox,irfanah/teambox,teambox/teambox,wesbillman/projects,nfredrik/teambox,nfredrik/teambox,nfredrik/teambox,irfanah/teambox,ccarruitero/teambox,ccarruitero/teambox,crewmate/crewmate