Make "WordPress is also available in..." string translatable
|Reported by:||SergeyBiryukov||Owned by:|
Migrating from #wp18682:
Currently the links to local sites displayed on WordPress.org for international visitors are partly English, partly translated:
WordPress is also available in Русский.
WordPress support forums are also available in Русский.
For better user experience, we should allow l10n teams to translate these strings in Rosetta. Due to different grammatical cases, the language name would probably need a separate context for these links.