Put post date and author at the top of news_post layouts

News are news because of their timeliness, it's crucial for especially
release news posts to have their date displayed in a location that is
immediately obvious for readers: below the title.
Merge pull request #895 from olivierlacan/emphasize-date-on-news-post

Put post date and author at the top of news_post layouts
Small fix
Translate for rexml-dos-cve-2014-8090 (vi)
change /en to /vi
Merge pull request #898 from thomastran/master

Translate for rexml-dos-cve-2014-8090 (vi)
Revert "change /en to /vi"

This reverts commit 4e8cb4f0b22bb67795e62b6351c9b49c4a89fc7e.
Fix broken link in CVE-2014-8090 post (vi)
Link to translated post (vi)
Rewrap (vi)
Fix broken link in CVE-2014-8090 post (vi)
 Translate 2014-11-25-ruby-2-2-0-preview2-released.md (bg)
Merge pull request #903 from gmitrev/news-2014-11-25

 Translate 2014-11-25-ruby-2-2-0-preview2-released.md (bg)
Translate Ruby 2.2.0-preview2 post (zh_tw).
Fix a typo in 2.2.0-preview2 post (zh_tw).
Updated bg/documentation/index.md
Updated downloads (bg)
Installation page translated to Bulgarian (bg)