Merged reference into the bundle docs
Removed configuration reference section
Moved cookbook article to Content bundle
Moved tutorial to its own section
Updated outdated references
Merge pull request #551 from symfony-cmf/revisiting_structure

[WIP] Revisiting structure part 1
Fix Packagist link
Merge pull request #554 from Rioji/patch-1

Fix Packagist link
Merge branch 'master' into dev

Conflicts:
	bundles/create/introduction.rst