noosfero | layout-helper: fix body css classes (2260332c)

[Bráulio Bhavamitra]

New comment for Commit 2260332c:

https://gitlab.com/noosfero/noosfero/commit/2260332c259ad5a49208f7bacde471a375fefbc6#note_26198070


likely this or the other commits broke some unit tests: https://travis-ci.org/noosfero/noosfero/jobs/214690755

btw, no space is needed as done in the join


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