access_level: Fix visualization to public, private and restrict folders.

(ActionItem2852)

Signed-off-by: Marcos Ramos <ms.ramos@outlook.com>
Signed-off-by: Gabriela Navarro <navarro1703@gmail.com>
Merge branch 'AI2852-access_level' of https://github.com/fga-unb/noosfero into AI2852-access_level