Fix spec failures in article_closing_spec.rb
Fix spec failures in article_closing_spec.rb

This is another case of Blog.default caching a blog before the specs get a
chance to set it up properly.  So, as before, we just stub it.  This fixes
two more spec failures, bringing the total down to 8.

pr0d1r2/typo,nvgit/typo1,xwang191/-edX.CS169.2x.hw1,alexhuang91/typo,blairanderson/that-music-blog,LOSDev/CS169-Homework-5,seyedrazavi/publify,freibuis/publify,amba178/legacy_code,zsstor/Typo,pr0d1r2/typo,wizzro/CS169.2x-hw1-2,saasbook/typo,waruboy/publify,freeranger/typo,LOSDev/CS169-Homework-5,SF-WDI-LABS/publify_debugging_lab,leminhtuan2015/nginx_capuchino_rails,mozzan/publify,telekomatrix/publify,mplstar/blog,jcfausto/publify,ndueber/cs-169_hw5,drakontia/publify,kmathew96/typo,nvgit/typo1,mozzan/publify,kryptykfysh/saas_typo,leminhtuan2015/temona_staging,McWild/psdtohtml,Endymion1977/typo,Juuro/publify,shaomingtan/publify,Chickey2/typo,shimolshah/typo-backup,saasbook/typo,vincenttian/cs169hw5,xwang191/-edX.CS169.2x.hw1,McWild/psdtohtml,edgarpng/typo-blog,mozzan/publify,solanolabs/publify,whithajess/publify,shrayus/hw-refactoring-legecy-code,leminhtuan2015/test_temona,kildem/blog,P5hil/typo,moneyadviceservice/publify,P5hil/typo,tedfrazier/saas_typo,randyramadhana/typo,vivekv009/inuni-blog,shimolshah/typo-backup,faraazkhan/myblog,Endymion1977/typo,leminhtuan2015/portal_staging,kmathew96/typo,boostsup/HW5_typo,leminhtuan2015/nginx_capuchino_rails,randyramadhana/typo,McWild/psdtohtml,sbstn-jmnz/typo,randyramadhana/typo,sf-wdi-25/publify_debugging_lab,publify/publify,freibuis/publify,shimolshah/typo-backup,leminhtuan2015/test_temona,lbiedinger/cs_typo,ashleymichal/typo,solanolabs/publify,tedfrazier/saas_typo,K-and-R/publify,freibuis/publify,backpackerhh/typo,arramos84/cs169-hw5,felixitous/typoo,leminhtuan2015/temona_staging,babaa/foodblog,nguyenduyta/deploy-test,drakontia/publify,telekomatrix/publify,LOSDev/CS169-Homework-5,blairanderson/that-music-blog,leminhtuan2015/temona_staging,LOSDev/CS169-Homework-5,nguyenduyta/deploy-test,waruboy/publify,agiamas/publify,SF-WDI-LABS/publify_debugging_lab,ashrob/typo,totzYuta/coding-diary-of-totz,freeranger/typo,khlumzeemee/typo,leminhtuan2015/nginx_capuchino_rails,ACPK/typo,nvgit/typo1,ndueber/cs-169_hw5,Chickey2/typo,backpackerhh/typo,bsiebz/legacyhw,blairanderson/that-music-blog,burakicel/Burakicel.com,framgia/publify,seyedrazavi/publify,kildem/blog,backpackerhh/typo,McWild/psdtohtml,ACPK/typo,agiamas/publify,hmallett/publify,pr0d1r2/typo,K-and-R/publify,aren19/HW_5,agiamas/publify,congchen5/typo,hmallett/publify,solanolabs/publify,robinparadise/typo,burakicel/Burakicel.com,babaa/foodblog,totzYuta/coding-diary-of-totz,arramos84/cs169-hw5,edgarpng/typo-blog,freeranger/typo,felixitous/typoo,ACPK/typo,bikmaeff/CS169.2_hw12,gvaquez/typo,pr0d1r2/typo,silygose/typo,zsstor/Typo,leminhtuan2015/portal_staging,amba178/legacy_code,publify/publify,kildem/blog,vincenttian/cs169hw5,K-and-R/publify,sf-wdi-25/publify_debugging_lab,moneyadviceservice/publify,lbiedinger/cs_typo,jcfausto/publify,congchen5/typo,pr0d1r2/typo,tinnywang/typo,ashleymichal/typo,silygose/typo,pr0d1r2/typo,felixitous/typoo,ndueber/cs-169_hw5,leminhtuan2015/portal_staging,kryptykfysh/saas_typo,ashrob/typo,natesholland/typo,arramos84/cs169-hw5,saasbook/typo,vivekv009/inuni-blog,Juuro/publify,faraazkhan/myblog,silygose/typo,P5hil/typo,ashleymichal/typo,shrayus/hw-refactoring-legecy-code,jcfausto/publify,bikmaeff/CS169.2_hw12,McWild/psdtohtml,mplstar/blog,publify/publify,whithajess/publify,kildem/blog,bsiebz/legacyhw,natesholland/typo,tinnywang/typo,whithajess/publify,pr0d1r2/typo,aren19/HW_5,moneyadviceservice/publify,matthewliu/saas_hw5,waruboy/publify,leminhtuan2015/portal_staging,vincenttian/cs169hw5,leminhtuan2015/nginx_capuchino_rails,bikmaeff/CS169.2_hw12,nguyenduyta/deploy-test,wizzro/CS169.2x-hw1-2,vivekv009/inuni-blog,mplstar/blog,gvaquez/typo,framgia/publify,lbiedinger/cs_typo,seyedrazavi/publify,leminhtuan2015/test_temona,robinparadise/typo,kmathew96/typo,pr0d1r2/typo,shrayus/hw-refactoring-legecy-code,shaomingtan/publify,hmallett/publify,khlumzeemee/typo,alexhuang91/typo,sbstn-jmnz/typo,zsstor/Typo,natesholland/typo,sf-wdi-25/publify_debugging_lab,mrfosip/typo,SF-WDI-LABS/publify_debugging_lab,boostsup/HW5_typo,telekomatrix/publify,bsiebz/legacyhw,matthewliu/saas_hw5,Juuro/publify,nvgit/typo1,moneyadviceservice/publify,boostsup/HW5_typo,sbstn-jmnz/typo,mrfosip/typo