Documents ContentBundle
Rewrite MediaBundle documentation
Fix indentation
Add upload_file_helper_service_id to configuration
media: updates for structure
media: added more descriptions to the reference config
Merge pull request #276 from symfony-cmf/media-bundle

[WIP] Rewrite MediaBundle documentation
[#276] Fixed language, code, reSt, etc.
[#276] Moved files around
[#276] Fixed previous commit
restructured SearchBundle docs
Merge pull request #280 from symfony-cmf/search-bundle

restructured SearchBundle docs
Fixed comments
Merge remote-tracking branch 'origin/master' into content-bundle

Conflicts:
	reference/configuration/core.rst
Merge pull request #274 from symfony-cmf/content-bundle

Rewrote ContentBundle docs
Merge remote-tracking branch 'origin/master' into routing