noosfero | organization_ratings: fixes for empty body (!994)

[Joenio Costa]

Merge Request !994 was merged
Merge Request url: https://gitlab.com/noosfero/noosfero/merge_requests/994
Project:Branches: marcosronaldo/noosfero:organization_rating_fix to noosfero/noosfero:master
Author: Marcos Ronaldo Pereira Junior
Assignee: Joenio Costa
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