noosfero | html_safe: fix action tracker description mess (#647)

[Bráulio Bhavamitra]

New Merge Request #647

https://gitlab.com/noosfero/noosfero/merge_requests/647

Project:Branches: brauliobo/noosfero:fix-action-tracker-mess to noosfero/noosfero:master
Author:    Bráulio Bhavamitra
Assignee:  

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