Add book pages

+ Add ``routes/viewbook``
+ Force ISBNs to be saved to database as ISBN-13
+ Redirect new books to their pages
+ Create a ``/books/<isbn>`` page
+ Create a ``/books/<isbn>/api`` page as a pretty version of the upstream api
+ Add ``book.jade``
+ Hyperlink books on profiles
+ Add link to profile on welcome screen
+ Add request as dependency
Fix breaking bug; change theme

- Removed slate theme
+ Added readable theme
+ Added default ``<title>`` for book pages
+ Added version link to login page
+
Improve book list

+ Formatted booklist ISBNs with hyphens
+ Added catch for when the upstream API fails
+ Add message to book list prompting you to add some books (issue #7)
Fail gracefully when navbar has no user

+ Add check for user before trying to display the username in navbar
+ Add navbar to version page
Downgrade booklist panel from primary to info
add duplicate validation
Change 'edit' profile to 'view'
Add version, navbar to every page

+ Add version footer to every page
+ Add navbar to login page
+ Add fork link to version page
+ Add source code link to version page
Add login count stat; fix ISBN validation

+ Added increment of stat on login
+ Display number of logins on profile
+ Edit schema to allow login stat
+ Fix add book ISBN validation
Merge pull request #11 from zuzak/dev