set_topic_last_post_at should use post's own created_at
set_topic_last_post_at should use post's own created_at

tomrc/forem,ascendbruce/forem,ajeje/forem,bbatsov/forem,ciscou/forem,brooks/forem,brooks/forem,0xCCD/forem,devleoper/forem,bodrovis/forem,NOX73/forem,zshannon/forem,joneslee85/forem,abrambailey/forem,kenmazaika/forem,bvsatyaram/forem,rdy/forem,beefsack/forem,devleoper/forem,ketanjain/forem,BanzaiMan/forem,kot-begemot/forem,yan-hoose/forem,rubysherpas/forem,sandboxrem/forem,ajeje/forem,ajeje/forem,yan-hoose/forem,bcavileer/forem,kot-begemot/forem,kunalchaudhari/forem,link-er/forem,beansmile/forem,tomkrus/forem,mhoad/forem,syndicut/forem,tonic20/forem,xenonn/forem,ch000/forem,ketanjain/forem,nikolaevav/forem,tomrc/forem,bbatsov/forem,daniely/forem,trakt/forem,kl/forem,mijoharas/forem,nikolaevav/forem,syndicut/forem,zhublik/forem,ch000/forem,knewter/forem,xenonn/forem,daniely/forem,radar/forem,jarray52/forem,sandboxrem/forem,etjossem/Goodsmiths-Hub,rdy/forem,mauriciopasquier/forem,amwelles/forem,hanspolo/forem,beansmile/forem,mauriciopasquier/forem,danman01/forem,hepu/forem,kamarcum/forem,RostDetal/forem,tomkrus/forem,efrence/forem,kenmazaika/forem,jaybrueder/forem,RostDetal/forem,Fullscreen/forem,eivindhagen/forem,amwelles/forem,jaybrueder/forem,bagusyuu/forem,beefsack/forem,NOX73/forem,nikolaevav/forem,bagusyuu/forem,kamarcum/forem,BanzaiMan/forem,efrence/forem,juozasg/forem,hanspolo/forem,abrambailey/forem,bvsatyaram/forem,danman01/forem,kl/forem,jarray52/forem,zhublik/forem,ketanjain/forem,trakt/forem,gabriel-dehan/forem,joneslee85/forem,netjungle/forem,eivindhagen/forem,0xCCD/forem,radar/forem,devleoper/forem,tomrc/forem,juozasg/forem,Fullscreen/forem,elm-city-craftworks/forem,kunalchaudhari/forem,andypike/forem,frankmarineau/forem,jeremyong/forem,prasadrails/forem,RostDetal/forem,gabriel-dehan/forem,moh-alsheikh/forem,andypike/forem,hepu/forem,jaybrueder/forem,mmcc/forem,SamLau95/forem,wesleycho/forem,rubysherpas/forem,wuwx/forem,bcavileer/forem,etjossem/Goodsmiths-Hub,ciscou/forem,moh-alsheikh/forem,frankmarineau/forem,prasadrails/forem,code-mancers/forem,SamLau95/forem,mijoharas/forem,rubysherpas/forem,ascendbruce/forem,tonic20/forem,zshannon/forem,mmcc/forem,BoboFraggins/forem,jeremyong/forem,zhublik/forem,trakt/forem,efrence/forem,link-er/forem,netjungle/forem,code-mancers/forem,hanspolo/forem,frankmarineau/forem,bodrovis/forem,wesleycho/forem,codev/forem,elm-city-craftworks/forem,wuwx/forem,codev/forem,wuwx/forem,radar/forem,mhoad/forem,BoboFraggins/forem,knewter/forem