Source group normalization

<div class="norm"><div class="head">RAW SOURCES <b>→</b> SOURCE GROUP</div><div class="flow"><div class="raw"><span>news_mail</span><span>Newsletter</span><span>email-news</span></div><div class="arrow">→</div><div class="unified"><strong>EMAIL</strong><div class="bar" id="bar"></div><small id="count">1 SOURCE</small></div></div></div>

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