Fix <pre> rendering on landing page
Implement full support of WeeChat text styling
Colors look better on a slightly darker bg
Minor UI improvements
Support WeeChat color scheming of date prefixes
Optimize style attributes overriding
Subtle bufferline hover background color

This helps reading long lines by providing a visual linear horizontal
guide.
Fix comment following FlashCode's update of doc
Merge pull request #68 from eepp/weechat-js-full-styling

Full styling