Add style guide to the source locale
Add style guide to the source locale

There has been a lack of rules how to structure our locale en.yml. This
is a start to document some guidelines which can evolve over time.

Rules can be discussed in the community forum or in pull requests. Once
there is a strong agreement, we should add it to this guide.

mkllnk/openfoodnetwork,Em-AK/openfoodnetwork,mkllnk/openfoodnetwork,openfoodfoundation/openfoodnetwork,openfoodfoundation/openfoodnetwork,oeoeaio/openfoodnetwork,Em-AK/openfoodnetwork,openfoodfoundation/openfoodnetwork,lin-d-hop/openfoodnetwork,Em-AK/openfoodnetwork,Em-AK/openfoodnetwork,Matt-Yorkley/openfoodnetwork,oeoeaio/openfoodnetwork,openfoodfoundation/openfoodnetwork,Matt-Yorkley/openfoodnetwork,KateDavis/openfoodnetwork,lin-d-hop/openfoodnetwork,mkllnk/openfoodnetwork,KateDavis/openfoodnetwork,lin-d-hop/openfoodnetwork,oeoeaio/openfoodnetwork,KateDavis/openfoodnetwork,Matt-Yorkley/openfoodnetwork,KateDavis/openfoodnetwork,Matt-Yorkley/openfoodnetwork,lin-d-hop/openfoodnetwork,oeoeaio/openfoodnetwork,mkllnk/openfoodnetwork