Reset the collections hash on #reset.
Reset the collections hash on #reset.

Fixes #2234.

zhangkuaiji/jekyllcn,nasht00/jekyll,desidude03/jekyll,shliujing/jekyll,tomasdiez/jekyll,winndows/jekyll,xiongjungit/jekyll,supriyantomaftuh/jekyll,krishnakalyan3/jekyll,0x00evil/jekyll,vidbina/jekyll,MjAbuz/jekyll,akoeplinger/jekyll,ls2uper/jekyll,tareq-s/jekyll,garvitr/jekyll,larryfox/jekyll,zhangkuaiji/jekyllcn,angeliaz/jekyll,schaazzz/jekyll,princeofdarkness76/jekyll,honger05/jekyllcn,jaroot32/jekyll,hartmel/jekyll,ramoslin02/jekyll,shliujing/jekyll,naughtyboy83/jekyll,tillgrallert/jekyll,stevecrozz/jekyll,ZDroid/jekyll,matuzo/jekyll,krahman/jekyll,ewinkler/jekyll,mrb/jekyll,yihangho/jekyll,julienbourdeau/jekyll,LuoPX-15510486969/jekyll,daniel-beck/jekyll,hiteshsuthar/jekyll,UniFreak/jekyllcn,chinayin/jekyll,dangaute/eng,rlugojr/jekyll,rasa2011/rasa2011.github.io,SQS2/Test,fengsmith/jekyllcn,rebornix/jekyll,mrb/jekyll,adilapapaya/jekyll,alihalabyah/jekyll,johnnycastilho/jekyll,jmknoll/jekyll,rovrevik/jekyll,tobscure/jekyll,zsyed91/jekyll,larryfox/jekyll,superve/jekyll,AaronSikes/jekyll,ZainRizvi/jekyll,zhangkuaiji/jekyllcn,tareq-s/jekyll,dansef/jekyll,backendeveloper/jekyll,CPVPLachlan/CPVP-Blog,greent2008/jekyll,hiteshsuthar/jekyll,chrisfinazzo/jekyll,foocoder/jekyll,tamouse/jekyll,ramoslin02/jekyll,wadaries/jekyll,kuangyeheng/jekyll,jekyll/jekyll,jaybe-jekyll/jekyll,isathish/jekyll,CorainChicago/jekyll,gencer/jekyll,iRoxx/jekyll,x-way/jekyll,xtymichael/jekyll,sasongkojati/jekyll,lcustodio/lcustodio.github.io_base,jmhardison/jekyll,isathish/jekyll,jaybe-jekyll/jekyll,lcustodio/lcustodio.github.io_base,matuzo/jekyll,daniel-beck/jekyll,xcatliu/jekyllcn,alex-kovac/jekyll,abhilashhb/jekyll,gkunwar/gkunwar.github.io,krishnakalyan3/jekyll,desidude03/jekyll,xiebinhqy/jklly_china,tugberkugurlu/jekyll,pheuko/jekyll,UniFreak/jekyllcn,lcustodio/lcustodio.github.io_base,ajhit406/jekyll,alfredxing/jekyll,iRoxx/jekyll,mixxmac/jekyll,doubleday/jekyll,gkunwar/gkunwar.github.io,hiteshsuthar/jekyll,tillgrallert/jekyll,0x00evil/jekyll,Teino1978-Corp/jekyll,richsoni/jekyll,thejameskyle/jekyll,shuber2/jekyll,christophermanning/jekyll,darwin/jekyll,monxim/monxim.github.io,MjAbuz/jekyll,hubsaysnuaa/jekyll,matuzo/jekyll,kuangyeheng/jekyll,fabulousu/jekyll,krahman/jekyll,AnanthaRajuC/jekyll,xiaoshaozi52/jekyll,abhilashhb/jekyll,harrissoerja/jekyll,hartmel/jekyll,m2candre/jekyll,MauroMrod/jekyll,eloyesp/jekyll,naughtyboy83/jekyll,tillgrallert/jekyll,nasht00/jekyll,tugberkugurlu/jekyll,princeofdarkness76/jekyll,liukaijv/jekyll,jekyll/jekyll,fulldecent/jekyll,alfredxing/jekyll,fulldecent/jekyll,garvitr/jekyll,angeliaz/jekyll,mixxmac/jekyll,trungvothanh/jekyll,jmptrader/jekyll,liukaijv/jekyll,Wirachmat/jekyll,johnnycastilho/jekyll,ramoslin02/jekyll,thetaxman/jekyll,royalwang/jekyll,princeofdarkness76/jekyll,LuoPX-15510486969/jekyll,Strangehill/jekyll,tomasdiez/jekyll,desidude03/jekyll,honger05/jekyllcn,fulldecent/jekyll,chrisfinazzo/jekyll,dansef/jekyll,howkj1/jekyll,chiyodad/jekyll,rongl/jekyll,18F/jekyll,pmarsceill/jekyll,daniel-beck/jekyll,jaroot32/jekyll,ryanshaw/jekyll,darwin/jekyll,AtekiRyu/jekyll,gynter/jekyll,nickg33/jekyll,jmhardison/jekyll,x-way/jekyll,FlyingWHR/jekyll,Strangehill/jekyll,digideskio/jekyll,julienbourdeau/jekyll,leichunxin/jekyll,xantage/jekyll,pmarsceill/jekyll,floydpraveen/jekyll,brint/jekyll,saitodisse/jekyll,QuinntyneBrown/jekyll,xiongjungit/jekyll,PepSalehi/jekyll,goragod/jekyll,Kinghack/kinghack.github.com,0x00evil/jekyll,CPVPLachlan/CPVP-Blog,alfredxing/jekyll,egobrightan/jekyll,vcgato29/jekyll,Teino1978-Corp/jekyll,schaazzz/jekyll,dangaute/eng,marrujoalex/jekyll,MjAbuz/jekyll,LeuisKen/jekyllcn,EddieDow/jekyll,sideci-sample/sideci-sample-jekyll,rongl/jekyll,rajrathore/jekyll,tugberkugurlu/jekyll,zsyed91/jekyll,nathanhorrigan1/webdeveloper,Wirachmat/jekyll,tillgrallert/jekyll,gencer/jekyll,LeuisKen/jekyllcn,kuangyeheng/jekyll,indraj/jekyll,bsmr-ruby/jekyll,fengsmith/jekyll,AaronSikes/jekyll,zsyed91/jekyll,codeclimate-testing/jekyll,ajhit406/jekyll,floydpraveen/jekyll,Strangehill/jekyll,tamouse/jekyll,xtymichael/jekyll,ReachingOut/jekyll,jmepg/jekyll,xantage/jekyll,dezon/jekyll,royalwang/jekyll,brint/jekyll,eloyesp/jekyll,alihalabyah/jekyll,garvitr/jekyll,1gitGrey/jekyll,fengsmith/jekyllcn,jaybe-jekyll/jekyll,FlyingWHR/jekyll,likong/jekyll,sanxore/sanxore.github.com,rongl/jekyll,cyberid41/jekyll,superve/jekyll,ajhit406/jekyll,getandpost/jekyll.github.io,aarvay/jekyll,nateberkopec/jekyll,vidbina/jekyll,LuoPX-15510486969/jekyll,christophermanning/jekyll,greent2008/jekyll,larryfox/jekyll,AtekiRyu/jekyll,omeripek/jekyll,derekgottlieb/jekyll,jeffkole/jekyll,eloyesp/jekyll,jmknoll/jekyll,fengsmith/jekyll,CPVPLachlan/CPVP-Blog,trungvothanh/jekyll,nasht00/jekyll,derekgottlieb/jekyll,noikiy/jekyll,shliujing/jekyll,nathanhorrigan1/webdeveloper,alex-kovac/jekyll,schaazzz/jekyll,stomar/jekyll,oresmus/jekyll,bsmr-ruby/jekyll,Kinghack/kinghack.github.com,alfredxing/jekyll,krahman/jekyll,CheekyFE/jekyll,egobrightan/jekyll,christophermanning/jekyll,stomar/jekyll,MauroMrod/jekyll,chrisfinazzo/jekyll,omeripek/jekyll,hub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