Fix subdoc.set() for JSON API.
Fix subdoc.set() for JSON API.

zartata/togetherjs,m4h4n/togetherjs,dialoghq/ShareJS,m4h4n/togetherjs,mcanthony/togetherjs,hhzplst/togetherjs,AlphaStaxLLC/togetherjs,rchrd2/ShareJS,playcanvas/ShareJS,abhishekgahlot/togetherjs,freewind/ShareJS,AlphaStaxLLC/togetherjs,mcanthony/togetherjs,ericariyanto/togetherjs,TimeTravelersHackMe/togetherjs,rasata/ShareJS,matthewbauer/ShareJS,abhishekgahlot/togetherjs,hhzplst/togetherjs,kantele/k-share,mcanthony/togetherjs,m4h4n/togetherjs,AlphaStaxLLC/togetherjs,shamim8888/togetherjs,youprofit/togetherjs,igmcdowell/ShareJS,igmcdowell/ShareJS,erpframework/ShareJS,TimeTravelersHackMe/togetherjs,ericariyanto/togetherjs,hhzplst/togetherjs,gdseller/ShareJS,shamim8888/togetherjs,kyroskoh/togetherjs,shamim8888/togetherjs,TimeTravelersHackedMe/togetherjs,share/ShareJS,ericariyanto/togetherjs,kyroskoh/togetherjs,TimeTravelersHackedMe/togetherjs,googlearchive/togetherjs,a0x/ShareJS,ceros/ShareJS,playcanvas/ShareJS,googlearchive/togetherjs,dialoghq/ShareJS,nelsonsilva/ShareJS,TimeTravelersHackMe/togetherjs,zartata/togetherjs,youprofit/togetherjs,modulexcite/ShareJS,ceros/ShareJS,m4h4n/togetherjs,kyroskoh/togetherjs,TimeTravelersHackedMe/togetherjs,dialoghq/ShareJS,Nzaga/ShareJS,abhishekgahlot/togetherjs,kustomzone/ShareJS,luto/ShareJS,ericariyanto/togetherjs,AlphaStaxLLC/togetherjs,youprofit/togetherjs,zartata/togetherjs,hhzplst/togetherjs,HansPinckaers/shareJS,HansPinckaers/shareJS,mcanthony/togetherjs,gdseller/ShareJS,shamim8888/togetherjs,mcanthony/ShareJS,abhishekgahlot/togetherjs,youprofit/togetherjs,googlearchive/togetherjs,kyroskoh/togetherjs,TimeTravelersHackedMe/togetherjs,TimeTravelersHackMe/togetherjs,zartata/togetherjs