Pushover: return a hash from self.sounds when no api key configured
Pushover: return a hash from self.sounds when no api key configured

fixes #120

hlian/barnacles,hlian/barnacles,miguelcarvajal/lobsters,Bloc/lobsters,Denniskevin/lobsters,Bloc/lobsters,buitranquyet/lobsters,aaron-lebo/updn,harsha-mudi/lobsters,Denniskevin/lobsters,saitodisse/lobsters,sboklund/munu,buitranquyet/lobsters,sboklund/munu.co,derekprior/lobsters,GetStream/lobsters,saitodisse/lobsters,saitodisse/lobsters,Denniskevin/lobsters,cannikin/lobsters,GetStream/lobsters,calblueprint/bp-news,derekprior/lobsters,STRd6/barnacles,chaica/lobsters,nh-platform/barnacles,benrmatthews/servicedesignnews,udaysinghcode/projecthunt,sboklund/munu,udaysinghcode/projecthunt,nh-platform/barnacles,mojacc/lobsters,sboklund/munu.co,Bloc/lobsters,benrmatthews/servicedesignnews,mojacc/lobsters,SIGN-UP/totalitarian.info,udaysinghcode/projecthunt,nh-platform/barnacles,aaron-lebo/updn,derekprior/lobsters,Bloc/lobsters,aaron-lebo/updn,sboklund/munu.co,cannikin/lobsters,owen/lobsters,derekprior/lobsters,calblueprint/bp-news,harsha-mudi/lobsters,GetStream/lobsters,ABorgna/lobsters,cannikin/lobsters,mojacc/lobsters,miguelcarvajal/lobsters,ukazap/lobsters,sboklund/munu,owen/lobsters,ABorgna/lobsters,owen/lobsters,benrmatthews/servicedesignnews,ukazap/lobsters,calblueprint/bp-news,hlian/barnacles,ABorgna/lobsters,saitodisse/lobsters,andyyang/lobsters,harsha-mudi/lobsters,STRd6/barnacles,Denniskevin/lobsters,ABorgna/lobsters,chaica/lobsters,ukazap/lobsters,sboklund/munu.co,ukazap/lobsters,mojacc/lobsters,andyyang/lobsters,owen/lobsters,SIGN-UP/totalitarian.info,nh-platform/barnacles,hlian/barnacles,aaron-lebo/updn,buitranquyet/lobsters,chaica/lobsters,cannikin/lobsters,SIGN-UP/totalitarian.info,SIGN-UP/totalitarian.info,buitranquyet/lobsters,chaica/lobsters,miguelcarvajal/lobsters,STRd6/barnacles,andyyang/lobsters,GetStream/lobsters,harsha-mudi/lobsters,sboklund/munu,STRd6/barnacles