noosfero | Changes on metadata plugin (#444)

[Bráulio Bhavamitra]

New comment for Merge Request 444

https://gitlab.com/noosfero/noosfero/merge_requests/444#note_826873


Bráulio Bhavamitra

the idea of hiding errors is that this code is not the main purpose of the page, so avoid the possibility of an application crash just because of metadata. this avoid embarrassment for users.

can't see how a `block` would help the requisite of hiding errors. besides, the `block` would duplicate logic present on this loop for each model.

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