list_resource command
allow for arguments to list specific resource instances
use list command in runner
combine resource listings into single 'when' branch
remove get/post.

Debugging methods no longer needed.
usage is a method
create command for users
create user does not have a session check
create takes a list of input names, output names, and a closure to map between the two
use Create class to reduce nesting levels
move active session query to superclass
link command to connect images and resources
use link in create_contestant
use link in create season
use create in create_season
use create in create_user