Translate about/website, about/logo, update credits

[stomar]

New pages:

• about/website
• about/logo (for pl, ru: only small update)

Changes in _config.yml:

• update credits
• remove logo_credit

Status:

• bg
• de
• es
• fr
• id
• it
• ja
• ko
• pl
• pt
• ru
• tr
• vi
• zh_cn
• zh_tw

[JuanitoFatas]

Hello I have a question on Ruby logo.

Quoted from the logo page:

The Ruby logo is Copyright © 2006, Yukihiro Matsumoto.
It is licensed under the terms of the Creative Commons Attribution-ShareAlike 2.5 License agreement.

And the website page:

The Ruby logo is Copyright © 2006, Yukihiro Matsumoto.

My question is If the logo is copyright of Matz, could also license under CC by-sa 2.5?

I do not know about this. Thanks in advance.

[meisyal]

Sorry, I didn't mention this issue on this pull request #1289. I just want to make sure that id page has already been translated.