Simplify mobile menu behavior, avoid disabling top-level menu items when deep in hierarchy - resolves #391
zh-CN libraries page fix, remove rubyforge, use rubygems.
Merge pull request #374 from alepore/it-news-translation

Latest news translation in Italian (it)
revive ko and ru from unmaintained translations.
[it] fix latest news urls, see #374
Merge pull request #392 from huacnlee/fix_libraries

zh-CN libraries page fix, remove rubyforge, use rubygems.
Add 'ru' to index.html, footer, translation_status
Fix typos in CVE-2013-4164 post (de, fr)
Fix wrong version in CVE-2013-4164 post translations
Fix time format in CVE-2013-4164 post
Link to translated news post instead of 'en' (ko)
Fix YAML (es)
Fix typo in news post (ja)
Use consistent formatting on security page (en)
Update security page (de)
Update About Ruby Page (zh_tw).
Update Library Page (zh_tw).
Merge branch 'fix-recent-posts'
Apply some recent fixes to 'it' news translations
Update Download Page (zh_tw).