Remove Author model (use Person instead). Update models after removing Author. Add new Sponsor, Organization models.
Patch by: Pawel Solyga
Reviewed by: Todd Larsen
Review issue: 801
Review URL: http://codereviews.googleopensourceprograms.com/801
indexes:
# AUTOGENERATED
# This index.yaml is automatically updated whenever the dev_appserver
# detects that a new type of query is run. If you want to manage the
# index.yaml file manually, remove the above marker line (the line
# saying "# AUTOGENERATED"). If you want to manage some indexes
# manually, move them above the marker line. The index.yaml file is
# automatically uploaded to the admin console when you next deploy
# your application using appcfg.py.