Bug 980638 - Correctly detect FTU state from FxA dialog. r=ferjm

    We were improperly detecting whether FTU was running from the FxA dialog.
    Now we properly signal this by passing the 'isftu=true' query string to
    the dialog when it's created.
Merge pull request #19088 from 6a68/bug-980638-resubmitted

Bug 980638 - Correctly detect FTU state from FxA dialog