complete purchase confirmation page

* pass information through dynamically generated pages
* lookup price of book when it is time to display confirmation
more cleanup

* remove dead code
* landscape.io cleanup
* add Doxygen comments to new SCP APIs
add logoff

* add logoff GET
* use decorator to display link to logoff at the bottom of the page
set cookie lifetime to 5 minutes
version 1.0 - we have an MVP
Add Team A to doxy project name