fix logging out from editor page
fix logging out from editor page

closes #6514
- removes transition.abort from the signout method because it can override the ember-simple-auth's page refresh

kaychaks/kaushikc.org,NovaDevelopGroup/Academy,cwonrails/Ghost,bitjson/Ghost,hnarayanan/narayanan.co,zumobi/Ghost,e10/Ghost,ignasbernotas/nullifer,klinker-apps/ghost,telco2011/Ghost,ballPointPenguin/Ghost,Kaenn/Ghost,PeterCxy/Ghost,GroupxDev/javaPress,dbalders/Ghost,ngosinafrica/SiteForNGOs,daihuaye/Ghost,acburdine/Ghost,chevex/undoctrinate,sebgie/Ghost,ManRueda/manrueda-blog,ghostchina/Ghost-zh,epicmiller/pages,acburdine/Ghost,leonli/ghost,petersucks/blog,vainglori0us/urban-fortnight,daihuaye/Ghost,ErisDS/Ghost,stridespace/Ghost,mayconxhh/Ghost,NovaDevelopGroup/Academy,vainglori0us/urban-fortnight,Yarov/yarov,rizkyario/Ghost,kevinansfield/Ghost,klinker-apps/ghost,jorgegilmoreira/ghost,TryGhost/Ghost,ngosinafrica/SiteForNGOs,veyo-care/Ghost,syaiful6/Ghost,MadeOnMars/Ghost,SkynetInc/steam,leonli/ghost,epicmiller/pages,JohnONolan/Ghost,mohanambati/Ghost,hnarayanan/narayanan.co,NovaDevelopGroup/Academy,Kaenn/Ghost,janvt/Ghost,stridespace/Ghost,ManRueda/manrueda-blog,mohanambati/Ghost,letsjustfixit/Ghost,sebgie/Ghost,novaugust/Ghost,lf2941270/Ghost,adam-paterson/blog,novaugust/Ghost,leonli/ghost,daimaqiao/Ghost-Bridge,Elektro1776/javaPress,bosung90/Ghost,Trendy/Ghost,JonSmith/Ghost,dbalders/Ghost,javorszky/Ghost,daimaqiao/Ghost-Bridge,kevinansfield/Ghost,kevinansfield/Ghost,Trendy/Ghost,stridespace/Ghost,singular78/Ghost,disordinary/Ghost,ManRueda/manrueda-blog,cwonrails/Ghost,GroupxDev/javaPress,letsjustfixit/Ghost,ballPointPenguin/Ghost,ErisDS/Ghost,jaswilli/Ghost,janvt/Ghost,novaugust/Ghost,ivantedja/ghost,syaiful6/Ghost,Kikobeats/Ghost,PeterCxy/Ghost,GroupxDev/javaPress,Kaenn/Ghost,lf2941270/Ghost,sunh3/Ghost,ignasbernotas/nullifer,ErisDS/Ghost,leninhasda/Ghost,jorgegilmoreira/ghost,petersucks/blog,adam-paterson/blog,rizkyario/Ghost,AlexKVal/Ghost,Elektro1776/javaPress,sebgie/Ghost,singular78/Ghost,jomahoney/Ghost,mayconxhh/Ghost,JohnONolan/Ghost,BlueHatbRit/Ghost,leninhasda/Ghost,e10/Ghost,TryGhost/Ghost,BlueHatbRit/Ghost,mohanambati/Ghost,Xibao-Lv/Ghost,daimaqiao/Ghost-Bridge,letsjustfixit/Ghost,telco2011/Ghost,olsio/Ghost,Elektro1776/javaPress,jomahoney/Ghost,Kikobeats/Ghost,lukekhamilton/Ghost,acburdine/Ghost,cwonrails/Ghost,TryGhost/Ghost,pollbox/ghostblog,tidyui/Ghost,jorgegilmoreira/ghost,obsoleted/Ghost,singular78/Ghost,JonSmith/Ghost,RufusMbugua/TheoryOfACoder,RufusMbugua/TheoryOfACoder,olsio/Ghost,Kikobeats/Ghost,javorszky/Ghost,kaychaks/kaushikc.org,telco2011/Ghost,obsoleted/Ghost,Gargol/Ghost,pollbox/ghostblog,dbalders/Ghost,Gargol/Ghost,bitjson/Ghost,Yarov/yarov,AlexKVal/Ghost,disordinary/Ghost,ghostchina/Ghost-zh,jaswilli/Ghost,veyo-care/Ghost,rizkyario/Ghost,vainglori0us/urban-fortnight,MadeOnMars/Ghost,bosung90/Ghost,lukekhamilton/Ghost,Xibao-Lv/Ghost,tidyui/Ghost,zumobi/Ghost,JohnONolan/Ghost,SkynetInc/steam,sunh3/Ghost