noosfero | FIx parent directory for cloned article (#643)

[Daniela Feitosa]

New comment for Merge Request 643

https://gitlab.com/noosfero/noosfero/merge_requests/643#note_1987311


Daniela Feitosa

In `@page.parent.nil? ? nil : @page.parent` you don't need to test if it is nil to add nil. You can use only @page.parent. So the condition would be `@page.folder? ? @page : @page.parent`

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