noosfero | fix to sql injections vulnerabilities identified using brakeman (#832)

[Macartur Carvalho]

New Merge Request #832

https://gitlab.com/noosfero/noosfero/merge_requests/832

Project:Branches: macartur/noosfero:fix-vunerabilities-found-with-breakman to noosfero/noosfero:master
Author:    Macartur Carvalho
Assignee:  

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