Refactored the picker so that it is more generic
The picker now also works in the case the scope_path of the entity
should not be filtered on. Also, it is now easier to add new
functionality due to the fact that there is a seperate Field type
to handle it now.
Patch by: Sverre Rabbelier
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.