Fixed #13 bookmarks does not appear in the tag view.

Signed-off-by: Kouhei Maeda <mkouhei@palmtb.net>
Fixed #12 Tags and categories that do not have a bookmark is displayed.

 * This issue has resolved by adding toggle switch query string "is_all".

Signed-off-by: Kouhei Maeda <mkouhei@palmtb.net>