fetchBook with timeout.
fixed 啊
Revert "fixed 啊"

This reverts commit 21809afb201fd66b8d853e4505b2974a883ad634.
Revert "Revert "fixed 啊""

This reverts commit 95a41c839479068b76aa9b08f91913360ad8dfff.
fixed some bugs.

Display info when book list is empty in booklistView and nearby_view
fixed some bugs in book list view.
Merge pull request #45 from Nihiue/master

fixed some bugs.