Do not try to display service_label when service has been deleted
Do not try to display service_label when service has been deleted

Fixes an exception in AgentController#show when the service of an oauthable
agent has been deleted.

flagsoft/huginn,shirshendu/huginn,KentFujii/huginn,naiyt/huginn,cantonic/huginn,andywenk/huginn,naiyt/huginn,kyroskoh/huginn,TildeWill/huginn,cpretzer/huginn,MOZGIII/huginn,badrul/huginn,VelocityGrowth/huginn,purposeindustries/huginn,younata/huginn,ashmckenzie/huginn,rasata/huginn,jezcope/huginn,cantino/huginn,satishgoda/huginn,satishgoda/huginn,andywenk/huginn,dnjo/huginn,chrisgogreen/huginn,swimclan/huginn,eugenesvk/huginn,run-project/huginn,MadBomber/huginn,dsander/huginn,duke-libraries/huginn,Aluxian/huginn,Aluxian/huginn,bencornelis/huginn,purposeindustries/huginn,creativepsyco/huginn,stephenanthony/huginn,bencornelis/huginn,megaxox/huginn,stephenanthony/huginn,breandan/huginn,flagsoft/huginn,djolivier/huginn,cantino/huginn,darrencauthon/huginn,mathias/huginn,stephenanthony/huginn,CodeHunter2006/huginn,johnleeming/huginn,darrencauthon/huginn,wxdublin/huginn,megaxox/huginn,den53/huginn,duke-libraries/huginn,flagsoft/huginn,breandan/huginn,virtadpt/huginn,mikalauskas/huginn,marcusgadbem/huginn,mindvalley/huginn,shirshendu/huginn,toruta39/huginn,nuentes/huginn,c24b/huginn,swimclan/huginn,mathias/huginn,albertsun/huginn,niravaga/huginn,johnleeming/huginn,brianpetro/huginn,virtadpt/huginn,chrisgogreen/huginn,armuk/huginn,cantino/huginn,ashmckenzie/huginn,shaunaa126/huginn,armuk/huginn,mikalauskas/huginn,c24b/huginn,rasata/huginn,madflow/huginn,dobtco/huginn,swimclan/huginn,gautamkrishnar/huginn,MOZGIII/huginn,nuentes/huginn,TildeWill/huginn,askl56/huginn,kyroskoh/huginn,CodeHunter2006/huginn,omniscopeio/huginn,c24b/huginn,shaunaa126/huginn,dnjo/huginn-spotify-linker,dsander/huginn,AdrianoCahete/huginn,djolivier/huginn,askl56/huginn,Ishfal/huginn,cantonic/huginn,omniscopeio/huginn,kyroskoh/huginn,albertsun/huginn,cpretzer/huginn,materliu/huginn,mirko314/huginn,shirshendu/huginn,Ishfal/huginn,dobtco/huginn,huginn/huginn,materliu/huginn,eugenesvk/huginn,duke-libraries/huginn,MadBomber/huginn,wxdublin/huginn,younata/huginn,den53/huginn,chrisgogreen/huginn,materliu/huginn,mathias/huginn,madflow/huginn,toruta39/huginn,bencornelis/huginn,whicheverpeady/huginn,eugenesvk/huginn,run-project/huginn,armuk/huginn,run-project/huginn,marcusgadbem/huginn,ahmadassaf/IFTTT-Plus,brianpetro/huginn,niravaga/huginn,cpretzer/huginn,nuentes/huginn,albertsun/huginn,den53/huginn,rasata/huginn,creativepsyco/huginn,dnjo/huginn,strugee/huginn,djolivier/huginn,VelocityGrowth/huginn,madflow/huginn,mindvalley/huginn,dnjo/huginn-spotify-linker,azati/huginn,darrencauthon/huginn,mindvalley/huginn,shaunaa126/huginn,johnleeming/huginn,mirko314/huginn,gautamkrishnar/huginn,Ishfal/huginn,mirko314/huginn,megaxox/huginn,dsander/huginn,ashmckenzie/huginn,cantonic/huginn,badrul/huginn,ahmadassaf/IFTTT-Plus,MadBomber/huginn,AdrianoCahete/huginn,azati/huginn,VelocityGrowth/huginn,dnjo/huginn,AdrianoCahete/huginn,jezcope/huginn,ianblenke/huginn,deanishe/huginn,badrul/huginn,dobtco/huginn,wxdublin/huginn,azati/huginn,Aluxian/huginn,andywenk/huginn,mikalauskas/huginn,whicheverpeady/huginn,deanishe/huginn,huginn/huginn,TildeWill/huginn,CodeHunter2006/huginn,strugee/huginn,brianpetro/huginn,omniscopeio/huginn,jezcope/huginn,breandan/huginn,virtadpt/huginn,strugee/huginn,marcusgadbem/huginn,ianblenke/huginn,deanishe/huginn,run-project/huginn,gautamkrishnar/huginn,KentFujii/huginn,huginn/huginn,creativepsyco/huginn,KentFujii/huginn,dnjo/huginn-spotify-linker,ianblenke/huginn,niravaga/huginn,toruta39/huginn,ahmadassaf/IFTTT-Plus,whicheverpeady/huginn,askl56/huginn,naiyt/huginn,MOZGIII/huginn,purposeindustries/huginn,younata/huginn,satishgoda/huginn