Auto merge of #6225 - larsbergstrom:linuxcon_test, r=metajack
Auto merge of #6225 - larsbergstrom:linuxcon_test, r=metajack

r? @metajack @mbrubeck @glennw 
(or anybody, really)

This is just a simple version of summit3.html that has only the spinning rust logo and matrix multiplication calculator. Longcat currently has regressed and has both some rendering issues (margins have reappeared between the segments) and it only works as a standalone page and no longer within an iframe. I'll look into those enough to fix or at least log bugs when I get back.

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rixrix/servo,bjwbell/servo,rixrix/servo,mattnenterprise/servo,codemac/servo,runarberg/servo,samfoo/servo,splav/servo,SimonSapin/servo,rixrix/servo,KiChjang/servo,sadmansk/servo,walac/servo,dvberkel/servo,ConnorGBrewster/servo,samfoo/servo,dvberkel/servo,pyfisch/servo,dvberkel/servo,g-k/servo,akosel/servo,pyfisch/servo,nick-thompson/servo,codemac/servo,DominoTree/servo,nerith/servo,larsbergstrom/servo,avadacatavra/servo,saratang/servo,avadacatavra/servo,larsbergstrom/servo,j3parker/servo,tafia/servo,bjwbell/servo,zhangjunlei26/servo,peterjoel/servo,dhananjay92/servo,samfoo/servo,saneyuki/servo,tafia/servo,rnestler/servo,CJ8664/servo,ConnorGBrewster/servo,sadmansk/servo,nnethercote/servo,tafia/servo,DominoTree/servo,dagnir/servo,emilio/servo,notriddle/servo,peterjoel/servo,boghison/servo,anthgur/servo,szeged/servo,A-deLuna/servo,KiChjang/servo,tafia/servo,mt2d2/servo,g-k/servo,dagnir/servo,rixrix/servo,sadmansk/servo,ryancanhelpyou/servo,GreenRecycleBin/servo,dati91/servo,caldwell/servo,mdibaiee/servo,saneyuki/servo,ConnorGBrewster/servo,splav/servo,caldwell/servo,canaltinova/servo,dati91/servo,AnthonyBroadCrawford/servo,ConnorGBrewster/servo,j3parker/servo,jlegendary/servo,akosel/servo,anthgur/servo,pgonda/servo,aweinstock314/servo,avadacatavra/servo,saratang/servo,RenaudParis/servo,dagnir/servo,brendandahl/servo,j3parker/servo,cbrewster/servo,mdibaiee/servo,dati91/servo,SimonSapin/servo,steveklabnik/servo,youprofit/servo,s142857/servo,nnethercote/servo,jgraham/servo,saneyuki/servo,huonw/servo,szeged/servo,emilio/servo,paulrouget/servo,nrc/servo,deokjinkim/servo,pyecs/servo,thiagopnts/servo,steveklabnik/servo,tempbottle/servo,meh/servo,zhangjunlei26/servo,larsbergstrom/servo,dati91/servo,aidanhs/servo,eddyb/servo,canaltinova/servo,splav/servo,deokjinkim/servo,anthgur/servo,rixrix/servo,AnthonyBroadCrawford/servo,brendandahl/servo,canaltinova/servo,larsbergstrom/servo,ryancanhelpyou/servo,dagnir/servo,pyfisch/servo,nnethercote/servo,rentongzhang/servo,upsuper/servo,emilio/servo,j3parker/servo,mattnenterprise/servo,nerith/servo,mattnenterprise/servo,RenaudParis/servo,canaltinova/servo,vks/servo,paulrouget/servo,caldwell/servo,pgonda/servo,nick-thompson/servo,dsandeephegde/servo,aweinstock314/servo,tschneidereit/servo,dsandeephegde/servo,nrc/servo,karlito40/servo,SimonSapin/servo,meh/servo,ConnorGBrewster/servo,DominoTree/servo,KiChjang/servo,zentner-kyle/servo,splav/servo,DominoTree/servo,jimberlage/servo,DominoTree/servo,bjwbell/servo,zentner-kyle/servo,kindersung/servo,SimonSapin/servo,dhananjay92/servo,zentner-kyle/servo,vks/servo,codemac/servo,dvberkel/servo,saratang/servo,brendandahl/servo,caldwell/servo,rnestler/servo,sadmansk/servo,nrc/servo,pyfisch/servo,bjwbell/servo,upsuper/servo,saneyuki/servo,mt2d2/servo,dati91/servo,RenaudParis/servo,jgraham/servo,rnestler/servo,mdibaiee/servo,jimberlage/servo,splav/servo,canaltinova/servo,upsuper/servo,anthgur/servo,j3parker/servo,SimonSapin/servo,nnethercote/servo,mbrubeck/servo,huonw/servo,WriterOfAlicrow/servo,rentongzhang/servo,karlito40/servo,tschneidereit/servo,hyowon/servo,peterjoel/servo,meh/servo,huonw/servo,RenaudParis/servo,meh/servo,A-deLuna/servo,CJ8664/servo,szeged/servo,eddyb/servo,boghison/servo,peterjoel/servo,runarberg/servo,dvberkel/servo,s142857/servo,GreenRecycleBin/servo,mbrubeck/servo,fiji-flo/servo,fiji-flo/servo,saneyuki/servo,notriddle/servo,kindersung/servo,sadmansk/servo,akosel/servo,codemac/servo,dati91/servo,paulrouget/servo,peterjoel/servo,larsbergstrom/servo,paulrouget/servo,wartman4404/servo,boghison/servo,A-deLuna/servo,pgonda/servo,jgraham/servo,KiChjang/servo,CJ8664/servo,zhangjunlei26/servo,mattnenterprise/servo,s142857/servo,nick-thompson/servo,s142857/servo,jlegendary/servo,hyowon/servo,zentner-kyle/servo,runarberg/servo,GyrosOfWar/servo,aidanhs/servo,meh/servo,dagnir/servo,anthgur/servo,youprofit/servo,jimberlage/servo,GyrosOfWar/servo,pyecs/servo,steveklabnik/servo,dsandeephegde/servo,huonw/servo,rixrix/servo,fiji-flo/servo,dati91/servo,emilio/servo,eddyb/servo,KiChjang/servo,upsuper/servo,DominoTree/servo,saratang/servo,rnestler/servo,thiagopnts/servo,nrc/servo,rixrix/servo,zhangjunlei26/servo,nerith/servo,pyecs/servo,hyowon/servo,paulrouget/servo,jlegendary/servo,pgonda/servo,ryancanhelpyou/servo,karlito40/servo,meh/servo,walac/servo,notriddle/servo,karlito40/servo,runarberg/servo,mattnenterprise/servo,tschneidereit/servo,upsuper/servo,nick-thompson/servo,vks/servo,boghison/servo,samfoo/servo,wartman4404/servo,jgraham/servo,tempbottle/servo,zentner-kyle/servo,dsandeephegde/servo,saratang/servo,nerith/servo,avadacatavra/servo,dsandeephegde/servo,splav/servo,saneyuki/servo,walac/servo,caldwell/servo,zhangjunlei26/servo,youprofit/servo,kindersung/servo,eddyb/servo,rixrix/servo,pyfisch/servo,caldwell/servo,nrc/servo,tempbottle/servo,steveklabnik/servo,notriddle/servo,dvberkel/servo,zhangjunlei26/servo,karlito40/servo,saneyuki/servo,emilio/servo,cbrewster/servo,notriddle/servo,boghison/servo,huonw/servo,nnethercote/servo,A-de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