Fixes "moment not defined" error in S3File field type.
Fixes "moment not defined" error in S3File field type.

Error occurs when one uses the datePrefix option on the S3File type.
dryna/keystone-twoje-urodziny,47pages/keystone,francesconero/keystone,magalhas/keystone,onenorth/keystone,tomasztunik/keystone,frontyard/keystone,riyadhalnur/keystone,brianjd/keystone,mikaoelitiana/keystone,sendyhalim/keystone,Redmart/keystone,andreufirefly/keystone,belafontestudio/keystone,lastjune/keystone,naustudio/keystone,woody0907/keystone,stosorio/keystone,pr1ntr/keystone,SlashmanX/keystone,sendyhalim/keystone,codevlabs/keystone,WofloW/keystone,Ftonso/keystone,SJApps/keystone,Tangcuyu/keystone,onenorth/keystone,suryagh/keystone,kidaa/keystone,belafontestudio/keystone,matthewstyers/keystone,Adam14Four/keystone,akoesnan/keystone,linhanyang/keystone,andrewlinfoot/keystone,Pylipala/keystone,unsworn/keystone,joerter/keystone,pr1ntr/keystone,MORE-HEALTH/keystone,trystant/keystone,wmertens/keystone,wmertens/keystone,trentmillar/keystone,mekanics/keystone,Yaska/keystone,kwangkim/keystone,developer-prosenjit/keystone,beni55/keystone,rmarji/keystone,mbayfield/keystone,wilsonfletcher/keystone,vokal/keystone,WofloW/keystone,cermati/keystone,antonj/keystone,KZackery/keystone,andrewlinfoot/keystone,KZackery/keystone,trentmillar/keystone,udp/keystone,Ftonso/keystone,Yaska/keystone,everisARQ/keystone,benkroeger/keystone,vokal/keystone,akoesnan/keystone,pswoodworth/keystone,efernandesng/keystone,rafmsou/keystone,everisARQ/keystone,Redmart/keystone,vmkcom/keystone,snowkeeper/keystone,gcortese/keystone,chrisgornall/d29blog,lastjune/keystone,ONode/keystone,kidaa/keystone,Pop-Code/keystone,WingedToaster/keystone,sarriaroman/keystone,antonj/keystone,Pylipala/keystone,davidbanham/keystone,Freakland/keystone,omnibrain/keystone,lojack/keystone,kumo/keystone,matthieugayon/keystone,stunjiturner/keystone,danielmahon/keystone,kittens/keystone,tanbo800/keystone,gemscng/keystone,stosorio/keystone,vokal/keystone,tony2cssc/keystone,xyzteam2016/keystone,kloudsio/keystone,sebmck/keystone,davibe/keystone,asifiqbal84/keystone,jrit/keystone,qwales1/keystone,jrit/keystone,concoursbyappointment/keystoneRedux,the1sky/keystone,frontyard/keystone,tanbo800/keystone,geminiyellow/keystone,xyzteam2016/keystone,ratecity/keystone,benkroeger/keystone,kristianmandrup/keystone,w01fgang/keystone,DenisNeustroev/keystone,omnibrain/keystone,youprofit/keystone,kloudsio/keystone,Pop-Code/keystone,ligson/keystone,creynders/keystone,webteckie/keystone,dvdcastro/keystone,davidbanham/keystone,riyadhalnur/keystone,trentmillar/keystone,jstockwin/keystone,jstockwin/keystone,michaelerobertsjr/keystone,danielmahon/keystone,woody0907/keystone,sarriaroman/keystone,mbayfield/keystone,webteckie/keystone,michaelerobertsjr/keystone,wilsonfletcher/keystone,wustxing/keystone,SJApps/keystone,matthewstyers/keystone,jeffreypriebe/keystone,mikaoelitiana/keystone,davibe/keystone,benkroeger/keystone,unsworn/keystone,asifiqbal84/keystone,Adam14Four/keystone,brianjd/keystone,efernandesng/keystone,concoursbyappointment/keystoneRedux,tomasztunik/keystone,gcortese/keystone,nickhsine/keystone,dvdcastro/keystone,trystant/keystone,matthewstyers/keystone,jacargentina/keystone,kwangkim/keystone,Tangcuyu/keystone,snowkeeper/keystone,creynders/keystone,matthieugayon/keystone,the1sky/keystone,vmkcom/keystone,stunjiturner/keystone,alobodig/keystone,youprofit/keystone,Freakland/keystone,kumo/keystone,chrisgornall/d29blog,TomKremer/keystonejs,MORE-HEALTH/keystone,jeffreypriebe/keystone,douglasf/keystone,udp/keystone,qwales1/keystone,andreufirefly/keystone,tony2cssc/keystone,quenktechnologies/keystone,joerter/keystone,andrewlinfoot/keystone,pswoodworth/keystone,w01fgang/keystone,DenisNeustroev/keystone,wustxing/keystone,frontyard/keystone,ratecity/keystone,mekanics/keystone,naustudio/keystone,SlashmanX/keystone,francesconero/keystone,codevlabs/keystone,geminiyellow/keystone,BlakeRxxk/keystone,rafmsou/keystone,gemscng/keystone,magalhas/keystone,danielmahon/keystone,jacargentina/keystone,ONode/keystone,douglasf/keystone,dryna/keystone-twoje-urodziny,kristianmandrup/keystone,suryagh/keystone,alobodig/keystone,developer-prosenjit/keystone,nickhsine/keystone,naustudio/keystone,beni55/keystone,BlakeRxxk/keystone,WingedToaster/keystone,ligson/keystone,lojack/keystone,killerbobjr/keystone,cermati/keystone,Yaska/keystone