Add AZW3 books in the default prefered format.
Add a style for the left footer. re #25
Move the CSS to a specific directory. re #25
rename the default css. re #25

--HG--
rename : styles/style.css => styles/style-default.css
Add the new style in eink style. re #25
The current Css is modified if a specific cookie is set. re #25
almost finish CSS change. re #25