Make spf.navigate_ synchronous again.
Make spf.navigate_ synchronous again.


[git-p4: change = 63577246]

tchiotludo/spfjs,scrapp-uk/spfjs,nicksay/spfjs,theanh/spfjs,scrapp-uk/spfjs,scrapp-uk/spfjs,nicksay/spfjs,youtube/spfjs,nicksay/spfjs,nicksay/spfjs,DavidCPhillips/spfjs,theanh/spfjs,nicksay/spfjs,youtube/spfjs,scrapp-uk/spfjs,tchiotludo/spfjs,tchiotludo/spfjs,tchiotludo/spfjs,youtube/spfjs,DavidCPhillips/spfjs,theanh/spfjs,scrapp-uk/spfjs,theanh/spfjs,youtube/spfjs,youtube/spfjs,DavidCPhillips/spfjs,tchiotludo/spfjs,theanh/spfjs,DavidCPhillips/spfjs