Update /ja/index.html and /en/index.html article code samples.

Fiexed to use the latest API in the article code samples.
L10n FR Text Compression: 1st half
L10n FR Text Compression: 2nd half
L10n FR Text Compression: translator block
L10n FR Text Compression: proofreading
L10n FR Text Compression: EN link-fixing and complementing
Merge pull request #1281 from tdd/l10n-fr-text-compression

L10n fr text compression
Automatically updating the calendar
Automatically updating the calendar
Correspond to the latest API for creating the instance of ScriptProcessorNode

The old API for creating the instance of ScriptProcessorNode is "createJavaScriptNode" method.
But, The latest API is "createScriptProcessor" method.
Therefore, this update added code for wrapping this difference.
Automatically updating the calendar
Automatically updating the calendar
Fixed link of masthead to go current language code.
Replaced old link of contributor's guide with github's.
Merge pull request #1286 from cwdoh/hotfix.add.lang_code.to.masthead_link

Fixed link of masthead to go current language code.
Automatically updating the calendar
Merge pull request #1284 from Korilakkuma/my-work

Update /ja/index.html, /en/index.html and /static/samples/meter-node.js
Merge pull request #1287 from html5rocks/master

more translations and other fixes.