Update markdown parser.
Update default.html to latest version.
Update _layouts/page.html to latest version.
Update index,html to latest version.
Update scripts/setup.js to latest version.
Add the contributing guide.
Fix UTF-8 with BOM.

All of the posts were saved with <U+FEFF> (zero-width space) on the
beginning of the file, which resulted in weird rendering of markdown
files.

Please double check your encoding in editors before saving.
Update and Fix front matter.

Updated and fixed the missing items for the front matter of each post.
They should now be uniformed.
Occasionally had to resave as UTF8 without BOM.
Update and sync the posts with original.
Fix the links for the TOC.
Fix link for footer credits.
Update list of links to localised content.
Fix 'How to contribute' heading translation.
Merge pull request #4 from vranac/update-from-original-2014-08-23

Update from original 2014 08 23