Added latest news posts (pt)
Correcting translation and replacing 'Decimal' with 'Rational'
(ko) Fix and retouch news 2013-12-21-semantic-versioning-after-2-1-0.md
Corrected capitalization for <ru/index.html>. 

Capitalized letters without reason are good for style.
Inserted a missing comma for Russian (ru).
Corrected spelling for phrases in <ru/examples/cities.md>.
Fix Japanese mirror server (RingServer) addresses at downloads [en]
Use named references instead of numeric ones at en/downloads [en]
Add the french translation of the news about the semantic versioning.
Update the news semantic versionning (fr)

Thanks to @nono...
Change the gender of increment word.

Thanks again to @nono.
Merge pull request #546 from GRoguelon/master

Translate the semantic versioning (fr)
Merge pull request #543 from arbox/patch-3

Corrected spelling for phrases in <ru/examples/cities.md>.
Merge pull request #541 from arbox/patch-1

Corrected capitalization for <ru/index.html>.
Merge pull request #542 from arbox/patch-2

Inserted a missing comma for Russian (ru).
Merge pull request #544 from makimoto/en-fix-mirror-sites

Use named references instead of numeric ones at en/downloads [en]
Update security page (id)
Fix indentation (de)
Small fixes on downloads page (en)
Small fixes on downloads page (es)