mobile responsive design and many design fixes
adapt CSS to be either responsive, or specific to mobiles
add mobile menu icon to show the hidden menu on touch
add optimized language bar menu for mobiles
remove 1200px width workaround for the wallet page, description now fit on 1
remove links on wallet icons for :hover compatibility with mobile devices
move right buttons into the page (fixes #67)
fix contributors plugin to produce W3C valid HTML
drop useless classes like .list
clean and organize CSS
add icon for ios touch devices (fixes #111)