Use the new build env on Travis.
Minor tweaks.
Update documentation for 2-1-stable branch.
Translate approval_status
tr: Onay -> Onay Durumu
pt, pt-BR: approval_status -> Estado de aprovação by @hernanilr
sv, es: approval_status corrected by @futhr
fr: correct approval_status by @bricesanchez
Correct Romanian approval_status
Remove 'noindex' from rel attr

Closes #125