tutorial, python: part4

Using the Users Service
https://developers.google.com/appengine/docs/python/gettingstartedpython27/usingusers
tutorial, python: part5 step1 - renaming

Handling Forms
https://developers.google.com/appengine/docs/python/gettingstartedpython27/handlingforms
tutorial, python: part5 step2 - finalise

Handling Forms
https://developers.google.com/appengine/docs/python/gettingstartedpython27/handlingforms
tutorial, python: part6 - working

Using the Datastore
https://developers.google.com/appengine/docs/python/gettingstartedpython27/usingdatastore