Marshall tutorial route inputs as JSON strings.
Marshall tutorial route inputs as JSON strings.

These routes previously didn't follow our standard convention of
sending arguments in JSON format, and so broke when we started
checking the argument format in
123d51e3aa1f97a50a7c0b1e505e1cb9b8cdc5f2.

Fixes #333.

karamcnair/zulip,sup95/zulip,peguin40/zulip,amanharitsh123/zulip,eeshangarg/zulip,shubhamdhama/zulip,Galexrt/zulip,brainwane/zulip,Diptanshu8/zulip,hackerkid/zulip,timabbott/zulip,TigorC/zulip,jphilipsen05/zulip,calvinleenyc/zulip,rishig/zulip,isht3/zulip,KingxBanana/zulip,punchagan/zulip,zulip/zulip,sup95/zulip,rishig/zulip,blaze225/zulip,jackrzhang/zulip,dattatreya303/zulip,amyliu345/zulip,shubhamdhama/zulip,cosmicAsymmetry/zulip,dwrpayne/zulip,zacps/zulip,Vallher/zulip,PhilSk/zulip,TigorC/zulip,kou/zulip,kou/zulip,sonali0901/zulip,peiwei/zulip,Vallher/zulip,kou/zulip,zulip/zulip,dhcrzf/zulip,punchagan/zulip,ryansnowboarder/zulip,Frouk/zulip,vaidap/zulip,Frouk/zulip,jrowan/zulip,souravbadami/zulip,vaidap/zulip,amanharitsh123/zulip,paxapy/zulip,SmartPeople/zulip,christi3k/zulip,rht/zulip,mohsenSy/zulip,jackrzhang/zulip,AZtheAsian/zulip,ahmadassaf/zulip,PhilSk/zulip,krtkmj/zulip,paxapy/zulip,ryanbackman/zulip,jphilipsen05/zulip,samatdav/zulip,jainayush975/zulip,joyhchen/zulip,AZtheAsian/zulip,rht/zulip,reyha/zulip,zacps/zulip,krtkmj/zulip,dawran6/zulip,umkay/zulip,SmartPeople/zulip,esander91/zulip,amyliu345/zulip,calvinleenyc/zulip,esander91/zulip,Frouk/zulip,eeshangarg/zulip,zacps/zulip,christi3k/zulip,Galexrt/zulip,Jianchun1/zulip,isht3/zulip,brainwane/zulip,vaidap/zulip,ryanbackman/zulip,ryanbackman/zulip,timabbott/zulip,aakash-cr7/zulip,mohsenSy/zulip,hackerkid/zulip,ahmadassaf/zulip,Diptanshu8/zulip,peiwei/zulip,SmartPeople/zulip,brockwhittaker/zulip,rht/zulip,synicalsyntax/zulip,j831/zulip,brainwane/zulip,dwrpayne/zulip,grave-w-grave/zulip,zulip/zulip,calvinleenyc/zulip,ahmadassaf/zulip,brainwane/zulip,dawran6/zulip,mahim97/zulip,KingxBanana/zulip,vaidap/zulip,dhcrzf/zulip,sharmaeklavya2/zulip,brockwhittaker/zulip,jphilipsen05/zulip,mohsenSy/zulip,alliejones/zulip,umkay/zulip,esander91/zulip,cosmicAsymmetry/zulip,KingxBanana/zulip,JPJPJPOPOP/zulip,timabbott/zulip,jrowan/zulip,cosmicAsymmetry/zulip,verma-varsha/zulip,peiwei/zulip,mahim97/zulip,Jianchun1/zulip,j831/zulip,tommyip/zulip,dhcrzf/zulip,reyha/zulip,blaze225/zulip,JPJPJPOPOP/zulip,mahim97/zulip,joyhchen/zulip,arpith/zulip,vaidap/zulip,synicalsyntax/zulip,rht/zulip,showell/zulip,grave-w-grave/zulip,j831/zulip,ryanbackman/zulip,umkay/zulip,shubhamdhama/zulip,sharmaeklavya2/zulip,verma-varsha/zulip,umkay/zulip,jphilipsen05/zulip,reyha/zulip,isht3/zulip,krtkmj/zulip,kou/zulip,andersk/zulip,timabbott/zulip,amyliu345/zulip,esander91/zulip,tommyip/zulip,punchagan/zulip,ryansnowboarder/zulip,showell/zulip,esander91/zulip,peguin40/zulip,synicalsyntax/zulip,andersk/zulip,verma-varsha/zulip,sonali0901/zulip,tommyip/zulip,vabs22/zulip,tommyip/zulip,PhilSk/zulip,esander91/zulip,blaze225/zulip,tommyip/zulip,Galexrt/zulip,susansls/zulip,vikas-parashar/zulip,cosmicAsymmetry/zulip,AZtheAsian/zulip,jackrzhang/zulip,brainwane/zulip,Frouk/zulip,krtkmj/zulip,aakash-cr7/zulip,vabs22/zulip,mohsenSy/zulip,Frouk/zulip,Diptanshu8/zulip,amyliu345/zulip,calvinleenyc/zulip,mahim97/zulip,mahim97/zulip,amanharitsh123/zulip,dwrpayne/zulip,jackrzhang/zulip,shubhamdhama/zulip,dhcrzf/zulip,calvinleenyc/zulip,samatdav/zulip,dwrpayne/zulip,brainwane/zulip,sup95/zulip,zulip/zulip,dhcrzf/zulip,j831/zulip,grave-w-grave/zulip,sonali0901/zulip,Galexrt/zulip,zacps/zulip,rht/zulip,dattatreya303/zulip,dhcrzf/zulip,KingxBanana/zulip,timabbott/zulip,tommyip/zulip,ryansnowboarder/zulip,vikas-parashar/zulip,peiwei/zulip,JPJPJPOPOP/zulip,dawran6/zulip,vaidap/zulip,sup95/zulip,christi3k/zulip,j831/zulip,sharmaeklavya2/zulip,Vallher/zulip,hackerkid/zulip,j831/zulip,ahmadassaf/zulip,ryanbackman/zulip,esander91/zulip,jrowan/zulip,jackrzhang/zulip,paxapy/zulip,peguin40/zulip,ahmadassaf/zulip,brockwhittaker/zulip,samatdav/zulip,Galexrt/zulip,reyha/zulip,Juanvulcano/zulip,Frouk/zulip,eeshangarg/zulip,dawran6/zulip,jainayush975/zulip,Vallher/zulip,amanharitsh123/zulip,AZtheAsian/zulip,vabs22/zulip,Galexrt/zulip,eeshangarg/zulip,samatdav/zulip,jphilipsen05/zulip,SmartPeople/zulip,susansls/zulip,arpith/zulip,shubhamdhama/zulip,jackrzhang/zulip,vikas-parashar/zulip,PhilSk/zulip,andersk/zulip,dawran6/zulip,rishig/zulip,dwrpayne/zulip,kou/zulip,umkay/zulip,shubhamdhama/zulip,rishig/zulip,Jianchun1/zulip,Juanvulcano/zulip,vikas-parashar/zulip,arpith/zulip,blaze225/zulip,dattatreya303/zulip,showell/zulip,isht3/zulip,susansls/zulip,grave-w-grave/zulip,verma-varsha/zulip,alliejones/zulip,eeshangarg/zulip,niftynei/zulip,synicalsyntax/zulip,zacps/zulip,Jianchun1/zulip,jainayush975/zulip,paxapy/zulip,andersk/zulip,zulip/zulip,JPJPJPOPOP/zulip,jphilipsen05/zulip,ryanbackman/zulip,reyha/zulip,JPJPJPOPOP/zulip,JPJPJPOPOP/zulip,sonali0901/zulip,hackerkid/zulip,TigorC/zulip,grave-w-grave/zulip,showell/zulip,dattatreya303/zulip,umkay/zulip,krtkmj/zulip,sharmaeklavya2/zulip,SmartPeople/zulip,Vallher/zulip,brockwhittaker/zulip,SmartPeople/zulip,christi3k/zulip,susansls/zulip,mahim97/zulip,mohsenSy/zulip,zacps/zulip,calvinleenyc/zulip,PhilSk/zulip,timabbott/zulip,hackerkid/zulip,vabs22/zulip,showell/zulip,vabs22/zulip,ahmadassaf/zulip,niftynei/zulip,jrowan/zulip,karamcnair/zulip,arpith/zulip,Diptanshu8/zulip,Juanvulcano/zulip,sonali0901/zulip,amanharitsh123/zulip,souravbadami/zulip,dwrpayne/zulip,sharmaeklavya2/zulip,peguin40/zulip,amyliu345/zulip,AZtheAsian/zulip,blaze225/zulip,christi3k/zulip,niftynei/zulip,aakash-cr7/zulip,umkay/zulip,andersk/zulip,rht/zulip,tommyip/zulip,peiwei/zulip,ryansnowboarder/zulip,paxapy/zulip,brockwhittaker/zulip,peiwei/zulip,susansls/zulip,ryansnowboarder/zulip,cosmicAsymmetry/zulip,sharmaeklavya2/zulip,niftynei/zulip,shubhamdhama/zulip,mohsenSy/zulip,andersk/zulip,blaze225/zulip,vikas-parashar/zulip,alliejones/zulip,peguin40/zulip,sup95/zulip,sonali0901/zulip,punchagan/zulip,grave-w-grave/zulip,punchagan/zulip,KingxBanana/zulip,zulip/zulip,arpith/zulip,karamcnair/zulip,karamcnair/zulip,KingxBanana/zulip,rht/zulip,hackerkid/zulip,isht3/zulip,vabs22/zulip,niftynei/zulip,joyhchen/zulip,arpith/zulip,andersk/zulip,christi3k/zulip,samatdav/zulip,brainwane/zulip,PhilSk/zulip,ahmadassaf/zulip,souravbadami/zulip,synicalsyntax/zulip,reyha/zulip,jainayush975/zulip,peguin40/zulip,rishig/zulip,jainayush975/zulip,Jianchun1/zulip,dwrpayne/zulip,isht3/zulip,dattatreya303/zulip,aakash-cr7/zulip,punchagan/zulip,dhcrzf/zulip,amyliu345/zulip,TigorC/zulip,alliejones/zulip,Frouk/zulip,kou/zulip,niftynei/zulip,Juanvulcano/zulip,souravbadami/zulip,Juanvulcano/zulip,AZtheAsian/zulip,Galexrt/zulip,souravbadami/zulip,cosmicAsymmetry/zulip,ryansnowboarder/zulip,souravbadami/zulip,showell/zulip,aakash-cr7/zulip,alliejones/zulip,dattatreya303/zulip,rishig/zulip,dawran6/zulip,aakash-cr7/zulip,synicalsyntax/zulip,jrowan/zulip,punchagan/zulip,kou/zulip,jrowan/zulip,eeshangarg/zulip,joyhchen/zulip,vikas-parashar/zulip,Jianchun1/zulip,karamcnair/zulip,synicalsyntax/zulip,samatdav/zulip,joyhchen/zulip,TigorC/zulip,Diptanshu8/zulip,jackrzhang/zulip,krtkmj/zulip,verma-varsha/zulip,rishig/zulip,timabbott/zulip,amanharitsh123/zulip,karamcnair/zulip,Juanvulcano/zulip,hackerkid/zulip,showell/zulip,brockwhittaker/zulip,sup95/zulip,alliejones/zulip,eeshangarg/zulip,ryansnowboarder/zulip,TigorC/zulip,zulip/zulip,joyhchen/zulip,krtkmj/zulip,Vallher/zulip,Vallher/zulip,peiwei/zulip,alliejones/zulip,Diptanshu8/zulip,karamcnair/zulip,verma-varsha/zulip,jainayush975/zulip,paxapy/zulip,susansls/zulip