Remove group :assets for Rails 4.
Remove group :assets for Rails 4.

subvisual/errbit,openSUSE/errbit,mvz/errbit,fusco/errbit,huangxiangdan/errbit,openSUSE/errbit,pallan/errbit,bonanza-market/errbit,micred/errbit,fusco/errbit,3zcurdia/errbit,wombatsecurity/errbit,Strnadj/errbit,peertransfer/errbit,Promptus/errbit,rud/errbit,stevecrozz/errbit,Gratzi/pegg-errors,steveyken/errbit,fireho/errbit,francetv/errbit,linki/errbit,iFixit/errbit,alphagov/errbit,jaronkk/errbit,threatsim/errbit,bengler/errbit,shivanibhanwal/errbit,Promptus/errbit,alphagov/errbit,errbit/errbit,sinrutina/errbit,fxposter/errbit,CarlosCD/errbit,peertransfer/errbit,Stackato-Apps/errbit,stevecrozz/errbit,griff/errbit,Stackato-Apps/errbit,pallan/errbit,threatsim/errbit,griff/errbit,projectdx/errbit,fusco/errbit,mikk150/errbit,mak-it/errbit,huangxiangdan/errbit,Cloud-Temple/errbit,linki/errbit,linki/errbit,espnbr/errbit,mak-it/errbit,mikk150/errbit,francetv/errbit,espnbr/errbit,Strnadj/errbit,disvelop/errbit,iFixit/errbit,francetv/errbit,shyftplan/errbit,rightscale/errbit,ZeusWPI/errbit,errbit/errbit,3zcurdia/errbit,sinrutina/errbit,jordoh/errbit,mvz/errbit,stevecrozz/errbit,sinrutina/errbit,rud/errbit,vinco/errbit,alphagov/errbit,peertransfer/errbit,iFixit/errbit,fireho/errbit,ndlib/errbit,PeggApp/pegg-errors,threatsim/errbit,burningpony/errbit,wombatsecurity/errbit,vinco/errbit,rud/errbit,cognoa/errbit,ninech/errbit,errbit/errbit,3zcurdia/errbit,notch8/errbit,notch8/errbit,threatsim/errbit,griff/errbit,lucianosousa/errbit,Gratzi/pegg-errors,burningpony/errbit,projectdx/errbit,jordoh/errbit,jordoh/errbit,startdatelabs/errbit,Strnadj/errbit,subvisual/errbit,jaronkk/errbit,ninech/errbit,PeggApp/pegg-errors,diowa/errbit,bengler/errbit,huangxiangdan/errbit,diowa/errbit,cognoa/errbit,dwilkie/errbit,dwilkie/errbit,ZeusWPI/errbit,shivanibhanwal/errbit,salemove/errbit,Gratzi/pegg-errors,lucianosousa/errbit,micred/errbit,openSUSE/errbit,burningpony/errbit,rightscale/errbit,alphagov/errbit,Stackato-Apps/errbit,Cloud-Temple/errbit,PeggApp/pegg-errors,micred/errbit,wombatsecurity/errbit,steveyken/errbit,gravity-platform/errbit,startdatelabs/errbit,startdatelabs/errbit,bengler/errbit,rightscale/errbit,Promptus/errbit,vinco/errbit,mvz/errbit,fxposter/errbit,assetricity/errbit,shyftplan/errbit,CarlosCD/errbit,lucianosousa/errbit,mikk150/errbit,salemove/errbit,shyftplan/errbit,dwilkie/errbit,ndlib/errbit,projectdx/errbit,fxposter/errbit,shivanibhanwal/errbit,bonanza-market/errbit,steveyken/errbit,disvelop/errbit,gravity-platform/errbit,salemove/errbit,cognoa/errbit,jaronkk/errbit,assetricity/errbit,subvisual/errbit,ninech/errbit,notch8/errbit,sideci-sample/sideci-sample-errbit,disvelop/errbit,bonanza-market/errbit,wombatsecurity/errbit,ZeusWPI/errbit,diowa/errbit,gravity-platform/errbit,CarlosCD/errbit,assetricity/errbit,fireho/errbit,ndlib/errbit,espnbr/errbit,Cloud-Temple/errbit,subvisual/errbit,mak-it/errbit,sideci-sample/sideci-sample-errbit