Merge pull request #29 from noesya/article-to-paper

assets/sass/_theme/hugo-osuny.sass

assets/sass/_theme/sections/papers.sass

i18n/en.yml

i18n/fr.yml

layouts/papers/list.html

layouts/papers/single.html

layouts/partials/papers/abstract.html

layouts/partials/papers/aside.html

layouts/partials/papers/authors.html

layouts/partials/papers/body.html

layouts/partials/papers/paper.html

layouts/partials/papers/papers.html

layouts/partials/papers/references.html

layouts/partials/persons/papers.html

layouts/persons/single.html

layouts/researchers/term.html

layouts/volumes/term.html