Separate language used for translation from page language.
Use lang_override for all "en" variants.
Set the site when requesting a promoted link.

This lets us do over18 thumbnail hiding correctly.
Timeout for r.spotlight.requestPromo.
Allow sponsors to change nsfw status of promoted links.
Class for UserText textarea.
Textarea for promoted link selftext is rounded.
Make widths consistent in the promo-form.
Update campaigns when a link that should be live is approved.