rails3: using mock instead of empty array to avoid stubs on nil
rails3: using mock instead of empty array to avoid stubs on nil

coletivoEITA/noosfero-ecosol,vfcosta/noosfero,LuisBelo/tccnoosfero,vfcosta/noosfero,alexandreab/noosfero,hebertdougl/noosfero,blogoosfero/noosfero,larissa/noosfero,evandrojr/noosferogov,larissa/noosfero,tallysmartins/noosfero,uniteddiversity/noosfero,EcoAlternative/noosfero-ecosol,uniteddiversity/noosfero,LuisBelo/tccnoosfero,abner/noosfero,macartur/noosfero,evandrojr/noosferogov,marcosronaldo/noosfero,tallysmartins/noosfero,arthurmde/noosfero,macartur/noosfero,samasti/noosfero,tallysmartins/noosfero,hebertdougl/noosfero,EcoAlternative/noosfero-ecosol,abner/noosfero,macartur/noosfero,abner/noosfero,evandrojr/noosferogov,abner/noosfero,samasti/noosfero,larissa/noosfero,marcosronaldo/noosfero,coletivoEITA/noosfero-ecosol,alexandreab/noosfero,hebertdougl/noosfero,CIRANDAS/noosfero-ecosol,coletivoEITA/noosfero,evandrojr/noosfero,hebertdougl/noosfero,macartur/noosfero,marcosronaldo/noosfero,LuisBelo/tccnoosfero,marcosronaldo/noosfero,evandrojr/noosfero,AlessandroCaetano/noosfero,CIRANDAS/noosfero-ecosol,uniteddiversity/noosfero,samasti/noosfero,coletivoEITA/noosfero,evandrojr/noosfero,coletivoEITA/noosfero-ecosol,samasti/noosfero,coletivoEITA/noosfero-ecosol,coletivoEITA/noosfero,vfcosta/noosfero,vfcosta/noosfero,coletivoEITA/noosfero,arthurmde/noosfero,arthurmde/noosfero,arthurmde/noosfero,uniteddiversity/noosfero,LuisBelo/tccnoosfero,EcoAlternative/noosfero-ecosol,EcoAlternative/noosfero-ecosol,larissa/noosfero,AlessandroCaetano/noosfero,hebertdougl/noosfero,marcosronaldo/noosfero,evandrojr/noosferogov,alexandreab/noosfero,tallysmartins/noosfero,evandrojr/noosfero,uniteddiversity/noosfero,tallysmartins/noosfero,evandrojr/noosfero,macartur/noosfero,evandrojr/noosfero,abner/noosfero,vfcosta/noosfero,alexandreab/noosfero,EcoAlternative/noosfero-ecosol,CIRANDAS/noosfero-ecosol,larissa/noosfero,samasti/noosfero,arthurmde/noosfero,coletivoEITA/noosfero-ecosol,LuisBelo/tccnoosfero,EcoAlternative/noosfero-ecosol,evandrojr/noosferogov,coletivoEITA/noosfero-ecosol,larissa/noosfero,abner/noosfero,blogoosfero/noosfero,arthurmde/noosfero,evandrojr/noosfero,LuisBelo/tccnoosfero,abner/noosfero,AlessandroCaetano/noosfero,tallysmartins/noosfero,AlessandroCaetano/noosfero,evandrojr/noosferogov,marcosronaldo/noosfero,vfcosta/noosfero,macartur/noosfero,CIRANDAS/noosfero-ecosol,alexandreab/noosfero,blogoosfero/noosfero,coletivoEITA/noosfero,coletivoEITA/noosfero,hebertdougl/noosfero,blogoosfero/noosfero,blogoosfero/noosfero,evandrojr/noosferogov,blogoosfero/noosfero,macartur/noosfero,AlessandroCaetano/noosfero,AlessandroCaetano/noosfero,alexandreab/noosfero,tallysmartins/noosfero,arthurmde/noosfero,hebertdougl/noosfero,coletivoEITA/noosfero,alexandreab/noosfero,uniteddiversity/noosfero,samasti/noosfero,marcosronaldo/noosfero,CIRANDAS/noosfero-ecosol,AlessandroCaetano/noosfero,uniteddiversity/noosfero,EcoAlternative/noosfero-ecosol,larissa/noosfero,blogoosfero/noosfero