bem/bem-site-engine — pull request #8 by tormozz48 (2014-07-24 15:22:28+00:00)
Title: Change logic for node source content verification

@tadatuta @tavriaforever

Hello all.
This fix is needed to verify source content of node.
Now, content can be settled to null or can be omitted. In this case here will be verification for existing not-null content for any other language.