Fixed old namings of (title|description)Key
Added XmlSchema test
Fixed tests
Made schema findable by Symfony
Merge pull request #98 from symfony-cmf/fix_naming

Fixed old namings of titleKey and descriptionKey
Merge pull request #97 from symfony-cmf/url_schema_test

Added test for XML schema
Deleted SeoAwareContent
Move extractor part to test Documents
remove exist-test from extractor methods in the tests
Fixed tests