Squashed 'src/Silvestra/Bundle/SeoBundle/' content from commit fe933d1

git-subtree-dir: src/Silvestra/Bundle/SeoBundle
git-subtree-split: fe933d1ce1e6fe5fb12589b575c0008909c432d4
Merge commit '0d3ecc11ccb5d9892af4b67f65350193e488b568' as 'src/Silvestra/Bundle/SeoBundle'