Make Thumbnail work without ActiveSupport. (cherry picked from commit 43946120a6231be06d59c8f28969946c213e6872)
Make Thumbnail work without ActiveSupport.
(cherry picked from commit 43946120a6231be06d59c8f28969946c213e6872)

keathley/paperclip,alexandrz/paperclip,bookis/paperclip,bdewater/paperclip,fxposter/paperclip,manorie/paperclip,sopheak-se/paperclip,medcat/paperclip,best-teacher/paperclip-old,cmaion/paperclip,hooroo/paperclip,Sporky023/paperclip,Sporky023/paperclip,raow/paperclip,liveminds/paperclip,sideci-sample/sideci-sample-paperclip,mrb/paperclip,gfvcastro/paperclip,keathley/paperclip,jonathandean/paperclip_tod,ScotterC/paperclip,liveminds/paperclip,sijn/paperclip-fork,freeslugs/paperclip,bdewater/paperclip,frankpinto/paperclip,agcantarelli/paperclip,Leadformance/paperclip,quadule/paperclip,tylerwillingham/paperclip,joshisa/paperclip,yukas/paperclip,onursarikaya/paperclip,mrgilman/paperclip,zurb/paperclip,rpbaptist/paperclip,dgynn/paperclip,pandamako/paperclip,dgynn/paperclip,frankpinto/paperclip,mehulkar/paperclip,felipemathies/paperclip,greatbody/paperclip,bryanl/paperclip,justanshulsharma/paperclip,joshisa/paperclip,raow/paperclip,danielwanja/paperclip,rpbaptist/paperclip,alexandrz/paperclip,dosire/paperclip,aditya01933/paperclip,Flameeyes/paperclip,Cohealo/paperclip,manorie/paperclip,medcat/paperclip,mrgilman/paperclip,justanshulsharma/paperclip,Cohealo/paperclip,carnivalmobile/paperclip,LongMan/paperclip,carnivalmobile/paperclip,mrb/paperclip,tiegz/paperclip,maintux/paperclip,ScotterC/paperclip,victorngkp/paperclip,cmaion/paperclip,12spokes/paperclip,betesh/paperclip,crowdtap/paperclip,mdkalish/paperclip,InesCARodrigues/paperclip,mdkalish/paperclip,greatbody/paperclip,gilabrantes/paperclip,zurb/paperclip,degica/paperclip,crowdtap/paperclip,meskyanichi/paperclip,aditya01933/paperclip,agcantarelli/paperclip,soramugi/paperclip,tiegz/paperclip,pandamako/paperclip,gfvcastro/paperclip,soramugi/paperclip,kerrizor/paperclip,meskyanichi/paperclip-cloudfiles,onursarikaya/paperclip,degica/paperclip,victorngkp/paperclip,maintux/paperclip,sopheak-se/paperclip,mehulkar/paperclip,Leadformance/paperclip,felipemathies/paperclip,pcorliss/paperclip,howaboutwe/paperclip,betesh/paperclip,pc-doctor/paperclip,itkin/paperclip,tylerwillingham/paperclip,InesCARodrigues/paperclip,freeslugs/paperclip