stop caching FileUpload (bug 627675)
stop caching FileUpload (bug 627675)

* this model isn't hit regularly so it's probably not much of a speedup
* the validation field breaks memcached if it's larger than 1M

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