Add migration for firefox accounts (bug 1021296)
Add migration for firefox accounts (bug 1021296)

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jasonthomas/zamboni,washort/zamboni,tsl143/zamboni,mudithkr/zamboni,ngokevin/zamboni,ngokevin/zamboni,ingenioustechie/zamboni,ddurst/zamboni,mozilla/zamboni,kumar303/zamboni,jasonthomas/zamboni,diox/zamboni,Jobava/zamboni,Hitechverma/zamboni,luckylavish/zamboni,Jobava/zamboni,tsl143/zamboni,eviljeff/zamboni,ingenioustechie/zamboni,ingenioustechie/zamboni,luckylavish/zamboni,tsl143/zamboni,eviljeff/zamboni,jasonthomas/zamboni,mudithkr/zamboni,kumar303/zamboni,elysium001/zamboni,Jobava/zamboni,mstriemer/zamboni,mozilla/zamboni,clouserw/zamboni,ngokevin/zamboni,diox/zamboni,mudithkr/zamboni,kumar303/zamboni,diox/zamboni,andymckay/zamboni,shahbaz17/zamboni,mozilla/zamboni,mstriemer/zamboni,ayushagrawal288/zamboni,jamesthechamp/zamboni,washort/zamboni,mstriemer/zamboni,washort/zamboni,clouserw/zamboni,washort/zamboni,jamesthechamp/zamboni,shahbaz17/zamboni,kumar303/zamboni,Hitechverma/zamboni,Jobava/zamboni,ayushagrawal288/zamboni,ingenioustechie/zamboni,luckylavish/zamboni,eviljeff/zamboni,eviljeff/zamboni,andymckay/zamboni,mstriemer/zamboni,ddurst/zamboni,ddurst/zamboni,tsl143/zamboni,ayushagrawal288/zamboni,jamesthechamp/zamboni,clouserw/zamboni,Hitechverma/zamboni,Hitechverma/zamboni,mudithkr/zamboni,diox/zamboni,jamesthechamp/zamboni,mozilla/zamboni,shahbaz17/zamboni,elysium001/zamboni,jasonthomas/zamboni,ddurst/zamboni,luckylavish/zamboni,elysium001/zamboni,andymckay/zamboni,elysium001/zamboni,clouserw/zamboni,shahbaz17/zamboni,ayushagrawal288/zamboni