Enable admin app for GAE (experimental)
Merge pull request #331 from spametki/master

Enable admin app for GAE (experimental)
fixed issue  1819:Datastore reconnect problem, thanks Alan
fixed  1820:uncaught pickling error with shell and app engine, thanks Alan
fixed 1821:RadioWidget and CheckboxesWidget wrong behavior, thanks Paolo Caruccio
admin app: enhanced ticket support for gae
Merge pull request #332 from spametki/master

admin app: enhanced ticket support for gae
fix issue 1825