Preparation for generic user views
Added a getSuffixValues method that is meant to allow for having a
non-public field as key_name.
Also added support for a key-name field being embeded in the form so
that if the key-fields change the old key_name is not lost.
A list of bugs is available in the Google App Engine SDK project on Google Code.
Please visit http://code.google.com/p/googleappengine for more details.