Flat flags
First try for new header
Fix subnav-small
Optimize new subnav backgrounds size
New contribute button style, first try
Fix @title-font
Changed footer social links for pictos (and added missings)
Fix subnav-large height
Some header adjustments
Fixes
Monochrome and transparent cover version
Fix subnav gradient
Fix topic search
Updated translations
Changed search picto
Style
More style
Style home page topic
Mock and style the blog section
Style the carousel