scroll: add header actions
scroll: add header actions

CartoDB/odyssey.js,0111001101111010/odyssey.js,moklick/odyssey.js,ken-muturi/odyssey.js,0111001101111010/odyssey.js,moklick/odyssey.js,CartoDB/odyssey.js,jonathanlurie/odyssey.js,makinacorpus/odyssey.js,makinacorpus/odyssey.js,ken-muturi/odyssey.js,makinacorpus/odyssey.js,brucestronge/stories,CartoDB/odyssey.js,ken-muturi/odyssey.js,brucestronge/stories,jonathanlurie/odyssey.js,brucestronge/stories,jonathanlurie/odyssey.js