Style.
Added a separate import:news task (issue #2).

* Extracted common logic into methods.
* Enqueue the RSS feeds and then spider the news directories for a more
  complete news import.
* Scrape the archive pages for the author information for each post.
Moved _tasks/* into Rakefile.
Added a import task.
Finished importing pt/ (issue #9).
Added menu localization for pt/
Added menu localization for /ko/
Added menu localization for /id/
Added menu localization for /ja/
Added menu localization for /pl/
Added menu localization for /tr/
Added menu localization for /zh_cn/
Added menu localization for /zh_TW/
Put all localizations under locales.
Put credits under locales:
Make the footer easier to edit.
Added sitelinks localization for /bg/
Organize.
Experiment with localizing the sidebar (issue #11).
Added sidebar localization for /en/