Add route setup tests
Change try-excepts in tests to assertRaises and remove assert_
Clean up redirect_to and rename as redirect_to_latest
Use page ident hash instead of page number in url

Change legacy url redirect and url transformation code to use the new
url format <book-ident-hash>:<page-ident-hash>
Add resource 404 test
Fix different tests with the same name that got skipped
Merge pull request #268 from Connexions/page-in-book-url

Add page in book routes and transform