remove a unused line in me.html
now in error page or 404 page, user's logged in information will also be displayed
add Book Lists to nav bar, add handlers for Reading, Interested, Done book lists
also display user's logged in information in '/test'
finish the framework of booklists
move the Fetching & Showing user's douban list codes to pages/booklists.py
move the parse_from_douban method in Book to auth/douban.py, that's where it should be; add a rating_max property in Book
add Comment in elements.py
Merge branch 'ui'