Remove section titles
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Work in progress
Merge branch 'lou-experiment' of https://github.com/SixSq/sixsq.github.com into lou-experiment

Conflicts:
	_posts/2013-01-10-product-b-nuvlabox.md
Typo
Add support for parent relationship for sub pages
Comment personae
Split content and intro sub page
Remove explicit image title
Now driven from metadata