do not validate empty search fields (bug 839049)
do not validate empty search fields (bug 839049)

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