stop middleware converting favicon to string
stop middleware converting favicon to string

closes #4658

- adds conditional to prevent favicon being processed as a string

UsmanJ/Ghost,lowkeyfred/Ghost,PeterCxy/Ghost,bsansouci/Ghost,weareleka/blog,RufusMbugua/TheoryOfACoder,kolorahl/Ghost,r1N0Xmk2/Ghost,NovaDevelopGroup/Academy,Brunation11/Ghost,beautyOfProgram/Ghost,etdev/blog,dqj/Ghost,MadeOnMars/Ghost,ngosinafrica/SiteForNGOs,influitive/crafters,codeincarnate/Ghost,Alxandr/Blog,lukw00/Ghost,chevex/undoctrinate,Netazoic/bad-gateway,jorgegilmoreira/ghost,Alxandr/Blog,memezilla/Ghost,allanjsx/Ghost,delgermurun/Ghost,axross/ghost,schneidmaster/theventriloquist.us,daimaqiao/Ghost-Bridge,hnarayanan/narayanan.co,hnq90/Ghost,darvelo/Ghost,TryGhost/Ghost,edsadr/Ghost,disordinary/Ghost,jin/Ghost,cicorias/Ghost,fredeerock/atlabghost,camilodelvasto/herokughost,zumobi/Ghost,leonli/ghost,AlexKVal/Ghost,aschmoe/jesse-ghost-app,flpms/ghost-ad,djensen47/Ghost,olsio/Ghost,obsoleted/Ghost,SkynetInc/steam,smedrano/Ghost,rafaelstz/Ghost,diogogmt/Ghost,weareleka/blog,karmakaze/Ghost,VillainyStudios/Ghost,obsoleted/Ghost,Yarov/yarov,Smile42RU/Ghost,v3rt1go/Ghost,madole/diverse-learners,DesenTao/Ghost,hoxoa/Ghost,shannonshsu/Ghost,bisoe/Ghost,greenboxindonesia/Ghost,dylanchernick/ghostblog,laispace/laiblog,panezhang/Ghost,allanjsx/Ghost,devleague/uber-hackathon,shannonshsu/Ghost,Kikobeats/Ghost,julianromera/Ghost,mattchupp/blog,djensen47/Ghost,arvidsvensson/Ghost,ladislas/ghost,wspandihai/Ghost,flomotlik/Ghost,v3rt1go/Ghost,tksander/Ghost,mtvillwock/Ghost,chris-yoon90/Ghost,smaty1/Ghost,davidenq/Ghost-Blog,Elektro1776/javaPress,melissaroman/ghost-blog,francisco-filho/Ghost,sceltoas/Ghost,IbrahimAmin/Ghost,tmp-reg/Ghost,Rovak/Ghost,velimir0xff/Ghost,veyo-care/Ghost,jaguerra/Ghost,lukekhamilton/Ghost,thinq4yourself/Unmistakable-Blog,davidmenger/nodejsfan,SachaG/bjjbot-blog,IbrahimAmin/Ghost,katrotz/blog.katrotz.space,sebgie/Ghost,smedrano/Ghost,ghostchina/Ghost-zh,acburdine/Ghost,lukaszklis/Ghost,ballPointPenguin/Ghost,sunh3/Ghost,laispace/laiblog,AnthonyCorrado/Ghost,e10/Ghost,trunk-studio/Ghost,omaracrystal/Ghost,netputer/Ghost,imjerrybao/Ghost,r1N0Xmk2/Ghost,neynah/GhostSS,thinq4yourself/Unmistakable-Blog,carlosmtx/Ghost,arvidsvensson/Ghost,vishnuharidas/Ghost,zackslash/Ghost,gabfssilva/Ghost,anijap/PhotoGhost,AnthonyCorrado/Ghost,trunk-studio/Ghost,makapen/Ghost,cysys/ghost-openshift,Xibao-Lv/Ghost,hyokosdeveloper/Ghost,ljhsai/Ghost,daimaqiao/Ghost-Bridge,Alxandr/Blog,psychobunny/Ghost,duyetdev/islab,no1lov3sme/Ghost,jomofrodo/ccb-ghost,Sebastian1011/Ghost,ineitzke/Ghost,gabfssilva/Ghost,BlueHatbRit/Ghost,ckousik/Ghost,no1lov3sme/Ghost,TribeMedia/Ghost,mohanambati/Ghost,FredericBernardo/Ghost,imjerrybao/Ghost,jorgegilmoreira/ghost,atandon/Ghost,Azzurrio/Ghost,sfpgmr/Ghost,dgem/Ghost,janvt/Ghost,delgermurun/Ghost,nneko/Ghost,epicmiller/pages,riyadhalnur/Ghost,neynah/GhostSS,lukekhamilton/Ghost,singular78/Ghost,lethalbrains/Ghost,Gargol/Ghost,lcamacho/Ghost,kaychaks/kaushikc.org,pbevin/Ghost,ManRueda/Ghost,JulienBrks/Ghost,situkangsayur/Ghost,veyo-care/Ghost,UnbounDev/Ghost,Kaenn/Ghost,jomahoney/Ghost,ITJesse/Ghost-zh,pensierinmusica/Ghost,camilodelvasto/localghost,kevinansfield/Ghost,zumobi/Ghost,Xibao-Lv/Ghost,mdbw/ghost,JonSmith/Ghost,SkynetInc/steam,STANAPO/Ghost,influitive/crafters,tadityar/Ghost,yanntech/Ghost,bisoe/Ghost,pensierinmusica/Ghost,YY030913/Ghost,tyrikio/Ghost,bastianbin/Ghost,wangjun/Ghost,wemakeweb/Ghost,pbevin/Ghost,rollokb/Ghost,bitjson/Ghost,rmoorman/Ghost,cicorias/Ghost,sergeylukin/Ghost,sebgie/Ghost,Kaenn/Ghost,olsio/Ghost,ddeveloperr/Ghost,omaracrystal/Ghost,aroneiermann/GhostJade,woodyrew/Ghost,ManRueda/Ghost,e10/Ghost,lethalbrains/Ghost,lanffy/Ghost,handcode7/Ghost,velimir0xff/Ghost,morficus/Ghost,jaswilli/Ghost,ThorstenHans/Ghost,wangjun/Ghost,Feitianyuan/Ghost,JulienBrks/Ghost,etanxing/Ghost,icowan/Ghost,thehogfather/Ghost,kwangkim/Ghost,zhiyishou/Ghost,LeandroNascimento/Ghost,tyrikio/Ghost,zeropaper/Ghost,tandrewnichols/ghost,Netazoic/bad-gateway,Kikobeats/Ghost,Coding-House/Ghost,handcode7/Ghost,vloom/blog,klinker-apps/ghost,GroupxDev/javaPress,kortemy/Ghost,letsjustfixit/Ghost,Kikobeats/Ghost,rmoorman/Ghost,bosung90/Ghost,javimolla/Ghost,leninhasda/Ghost,jomofrodo/ccb-ghost,dylanchernick/ghostblog,Romdeau/Ghost,FredericBernardo/Ghost,carlyledavis/Ghost,STANAPO/Ghost,ErisDS/Ghost,sunh3/Ghost,edurangel/Ghost,daimaqiao/Ghost-Bridge,morficus/Ghost,acburdine/Ghost,gleneivey/Ghost,dai-shi/Ghost,hnq90/Ghost,zackslash/Ghost,NamedGod/Ghost,zeropaper/Ghost,schematical/Ghost,blankmaker/Ghost,flpms/ghost-ad,wspandihai/Ghost,developer-prosenjit/Ghost,BayPhillips/Ghost,rito/Ghost,devleague/uber-hackathon,uploadcare/uploadcare-ghost-demo,sceltoas/Ghost,ryansukale/ux.ryansukale.com,aschmoe/jesse-ghost-app,kevinansfield/Ghost,benstoltz/Ghost,cncodog/Ghost-zh-codog,benstoltz/Ghost,pathayes/FoodBlog,disordinary/Ghost,Romdeau/Ghost,dymx101/Ghost,rouanw/Ghost,mayconxhh/Ghost,praveenscience/Ghost,rchrd2/Ghost,katrotz/blog.katrotz.space,novaugust/Ghost,acburdine/Ghost,bbmepic/Ghost,akveo/akveo-blog,NikolaiIvanov/Ghost,Loyalsoldier/Ghost,sajmoon/Ghost,vloom/blog,andrewconnell/Ghost,sangc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