Update translation strings

Signed-off-by: Bowe Frankema <bowe@cfcommunity.net>
Add translation instructions

Signed-off-by: Bowe Frankema <bowe@cfcommunity.net>
Re-organise theme

Signed-off-by: Bowe Frankema <bowe@cfcommunity.net>
Add nested pages plugin for language sites in the network

Signed-off-by: Bowe Frankema <bowe@cfcommunity.net>
Update tour. Big props to @betamax

Signed-off-by: Bowe Frankema <bowe@cfcommunity.net>
Update styling

Signed-off-by: Bowe Frankema <bowe@cfcommunity.net>