Personalize the Website

[atareversei]

• [x] change colors
• [x] update header and footer
• [x] update index page
• [x] set up i18n
• [x] add temporary logo and favicon

[atareversei]

I also added multi-sidebar feature, so we have 3 different sets of docs.

[atareversei]

I added bastanz's logo to qwest. It kinda matches, not gonna lie 😃