do checkbox disabling only when appropriate (bug 782740)
do checkbox disabling only when appropriate (bug 782740)

kumar303/addons-server,washort/zamboni,Prashant-Surya/addons-server,jasonthomas/zamboni,mozilla/olympia,beni55/olympia,andymckay/zamboni,Revanth47/addons-server,muffinresearch/olympia,shahbaz17/zamboni,kumar303/zamboni,Joergen/olympia,magopian/olympia,beni55/olympia,wagnerand/zamboni,eviljeff/olympia,andymckay/zamboni,eviljeff/olympia,wagnerand/addons-server,SuriyaaKudoIsc/olympia,kumar303/addons-server,yfdyh000/olympia,psiinon/addons-server,diox/olympia,jamesthechamp/zamboni,washort/zamboni,kumar303/olympia,Jobava/zamboni,jamesthechamp/zamboni,diox/zamboni,Nolski/olympia,lavish205/olympia,harikishen/addons-server,atiqueahmedziad/addons-server,andymckay/addons-server,psiinon/addons-server,spasovski/zamboni,ingenioustechie/zamboni,wagnerand/zamboni,mdaif/olympia,mudithkr/zamboni,mrrrgn/olympia,eviljeff/olympia,diox/olympia,mozilla/addons-server,wagnerand/zamboni,bqbn/addons-server,kumar303/addons-server,kmaglione/olympia,muffinresearch/olympia,yfdyh000/olympia,andymckay/addons-server,wagnerand/zamboni,mozilla/olympia,tsl143/addons-server,mstriemer/zamboni,ddurst/zamboni,elysium001/zamboni,Jobava/zamboni,diox/olympia,muffinresearch/olympia,muffinresearch/addons-server,kumar303/zamboni,jasonthomas/zamboni,Joergen/zamboni,shahbaz17/zamboni,jamesthechamp/zamboni,clouserw/zamboni,tsl143/zamboni,atiqueahmedziad/addons-server,harikishen/addons-server,eviljeff/zamboni,Revanth47/addons-server,Hitechverma/zamboni,lavish205/olympia,jasonthomas/zamboni,diox/zamboni,tsl143/zamboni,koehlermichael/olympia,mstriemer/zamboni,kumar303/zamboni,ingenioustechie/zamboni,Joergen/zamboni,elysium001/zamboni,muffinresearch/olympia,johancz/olympia,psiinon/addons-server,kumar303/olympia,harikishen/addons-server,muffinresearch/addons-server,Witia1/olympia,Nolski/olympia,Prashant-Surya/addons-server,ngokevin/zamboni,Revanth47/addons-server,mstriemer/zamboni,anaran/olympia,magopian/olympia,elysium001/zamboni,anaran/olympia,mrrrgn/olympia,mstriemer/olympia,kumar303/olympia,andymckay/olympia,harikishen/addons-server,wagnerand/olympia,Witia1/olympia,kmaglione/olympia,tsl143/addons-server,wagnerand/olympia,mrrrgn/olympia,ddurst/zamboni,eviljeff/zamboni,harry-7/addons-server,muffinresearch/addons-server,jasonthomas/zamboni,anaran/olympia,robhudson/zamboni,andymckay/olympia,andymckay/olympia,Nolski/olympia,jpetto/olympia,bqbn/addons-server,lavish205/olympia,bqbn/addons-server,mdaif/olympia,mrrrgn/olympia,Joergen/zamboni,wagnerand/addons-server,wagnerand/olympia,kmaglione/olympia,Hitechverma/zamboni,wagnerand/addons-server,crdoconnor/olympia,Jobava/zamboni,atiqueahmedziad/addons-server,johancz/olympia,Hitechverma/zamboni,ayushagrawal288/zamboni,ingenioustechie/zamboni,muffinresearch/addons-server,SuriyaaKudoIsc/olympia,kmaglione/olympia,eviljeff/zamboni,mdaif/olympia,Joergen/olympia,beni55/olympia,mudithkr/zamboni,harry-7/addons-server,mudithkr/zamboni,diox/olympia,luckylavish/zamboni,clouserw/zamboni,clouserw/zamboni,anaran/olympia,robhudson/zamboni,washort/zamboni,jamesthechamp/zamboni,luckylavish/zamboni,andymckay/zamboni,Joergen/zamboni,ddurst/zamboni,shahbaz17/zamboni,Nolski/olympia,mstriemer/olympia,diox/zamboni,mstriemer/zamboni,mdaif/olympia,aviarypl/mozilla-l10n-addons-server,mstriemer/addons-server,andymckay/addons-server,yfdyh000/olympia,mozilla/olympia,clouserw/zamboni,ddurst/zamboni,wagnerand/olympia,SuriyaaKudoIsc/olympia,mozilla/zamboni,ngokevin/zamboni,luckylavish/zamboni,washort/zamboni,ayushagrawal288/zamboni,kmaglione/olympia,tsl143/addons-server,koehlermichael/olympia,crdoconnor/olympia,johancz/olympia,mozilla/addons-server,Witia1/olympia,mozilla/addons-server,mstriemer/addons-server,aviarypl/mozilla-l10n-addons-server,kumar303/zamboni,spasovski/zamboni,Joergen/olympia,magopian/olympia,ayushagrawal288/zamboni,kumar303/olympia,Witia1/olympia,magopian/olympia,robhudson/zamboni,jpetto/olympia,ayushagrawal288/zamboni,mozilla/zamboni,andymckay/addons-server,beni55/olympia,crdoconnor/olympia,wagnerand/addons-server,luckylavish/zamboni,Witia1/olympia,muffinresearch/addons-server,yfdyh000/olympia,SuriyaaKudoIsc/olympia,mstriemer/addons-server,mrrrgn/olympia,harry-7/addons-server,Joergen/zamboni,koehlermichael/olympia,aviarypl/mozilla-l10n-addons-server,diox/zamboni,crdoconnor/olympia,kumar303/addons-server,robhudson/zamboni,Joergen/zamboni,eviljeff/olympia,johancz/olympia,harry-7/addons-server,Hitechverma/zamboni,tsl143/zamboni,Prashant-Surya/addons-server,spasovski/zamboni,bqbn/addons-server,mstriemer/olympia,tsl143/zamboni,koehlermichael/olympia,spasovski/zamboni,shahbaz17/zamboni,ingenioustechie/zamboni,Joergen/olympia,atiqueahmedziad/addons-server,mozilla/olympia,mudithkr/zamboni,jpetto/olympia,yfdyh000/olympia,lavish205/olympia,johancz/olympia,Revanth47/addons-server,Jobava/zamboni,Joergen/olympia,mstriemer/addons-server,mozilla/addons-server,koehlermichael/olympia,jpetto/olympia,crdoconnor/olympia,mdaif/olympia,muffinresearch/olympia,magopian/olympia,psiinon/addons-server,Nolski/olympia,ngokevin/zamboni,tsl143/addons-server,evi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