noosfero | Fix oauth_provider, upgrade doorkeeper to 2.2.0 (!978)

[Thiago Ribeiro]

New Merge Request !978

https://gitlab.com/noosfero/noosfero/merge_requests/978

Project:Branches: Thiagovsk/noosfero:federation_oauth_provider to noosfero/noosfero:master
Author:    Thiago Ribeiro
Assignee:  

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