Support for multiple language #2
Rewriting content structure to support the EN language
Adapt metadata to the new multilanguage support
Merge branch 'master' of https://github.com/opendatasoft/ods-documentation

Conflicts:
	content/api-documentation/search-api/records_search/article.md
	content/api-documentation/search-api/records_search/en/article.md
	content/api-documentation/search-api/records_search/en/metadata.yaml
	content/api-documentation/search-api/records_search_and_lookup/article.md
	content/faq/general/article.md
	content/faq/general/en/article.md
	content/faq/general/general/article.md
fix #2