added specs for contribution_detail metric methods
added specs for contribution_detail metric methods

vicnicius/catarse,mrmarcondes/catarse,victor95pc/catarse,devton/catarse,diogob/catarse,nicolasiensen/labcriativo,thiagocatarse/catarse,juanmanunez/catarse,stephenhack/yhacks,Saharitte/catarse,vicnicius/catarse,vandofb/catarse,andrewyong82/100pp,catarse/catarse,devton/catarse,paulopatto/catarse,paulopatto/catarse,umeshduggal/flockaway,mrmarcondes/catarse,vandofb/catarse,globalavocado/catarse,gumanoz/catarse,diraulo/catarse,ujjwalkhanal/helpbegin,victor95pc/catarse,globalavocado/catarse,ujjwalkhanal/helpbegin,rokibulhassan/catarse,liberland/catarse,mrmarcondes/catarse,nicolasiensen/labcriativo,liberland/catarse,paulopatto/catarse,juanmanunez/catarse,paulopatto/catarse,ripple0328/catarse,juanmanunez/catarse,Haseeb-Qureshi/catarse,Saharitte/catarse,ujjwalkhanal/helpbegin,ujjwalkhanal/helpbegin,andrewyong82/100pp,diegorv/catarse,ripple0328/catarse,vandofb/catarse,umeshduggal/flockaway,adrianob/catarse,devton/catarse,williamair1/catarse,gumanoz/catarse,diegorv/catarse,andrewyong82/100pp,wlads/catarse,thiagocatarse/catarse,globalavocado/catarse,diraulo/catarse,nicolasiensen/labcriativo,sushant12/jvn,diraulo/catarse,diegorv/catarse,wlads/catarse,coopsource/catarse,adrianob/99gamers,williamair1/catarse,sushant12/jvn,victor95pc/catarse,Saharitte/catarse,adrianob/catarse,umeshduggal/flockaway,adrianob/catarse,adrianob/99gamers,rokibulhassan/catarse,JamesUcci/webapplication,devton/catarse,coopsource/catarse,stephenhack/yhacks,ripple0328/catarse,stephenhack/yhacks,Haseeb-Qureshi/catarse,rokibulhassan/catarse,gumanoz/catarse,sushant12/jvn,ripple0328/catarse,catarse/catarse,liberland/catarse,catarse/catarse,coopsource/catarse,diogob/catarse,vicnicius/catarse,JamesUcci/webapplication,adrianob/99gamers,Haseeb-Qureshi/catarse,williamair1/catarse,catarse/catarse,sushant12/jvn,diogob/catarse,JamesUcci/webapplication,danielweinmann/catarse,thiagocatarse/catarse,danielweinmann/catarse,wlads/catarse