bitcoin.js: initial convertion to the new Spice API.
bitcoin: finished porting to the new Spice API.
bitcoin: started changing the style
bitcoin: Add Chris' styles on the IA
bitcoin.css: added media queries to change the font size.

It breaks when the screen goes smaller than 680px (especially for long numbers).
bitcoin: added padding to the bottom of the buy and sell tiles.
bitcoin: finished styling
Merge pull request #553 from duckduckgo/jag/bttf/bitcoin

Bitcoin: Move to new Spice API