modified preview_a5
fix a bug in print_book_a5: no post_date when two separated weixins were showed in the same page
fix a bug in make printable book: didn't convert book_no to string
Merge branch 'master' of github.com:whitefoxx/wx
edit items.html
modified huace sidebar
Merge branch 'master' of github.com:whitefoxx/wx
Merge branch 'dev' of github.com:whitefoxx/wx into dev