=BG= debugging tips
=BG= demonstrate debugging in controllers and templates
=BG= display a new custom template
=BG= pass a relational model into the generated custom controller
=BG= rewrite template to display the data presented
=BG= blank state message for when array controller has an empty list
=BG= notes
=BG= define a computed property which is recomputed based on changes over an array of related objects
=BG= use map reduce in computed property
=BG= register a handlebars helper and use it in a template
=BG= notes on action and linkTo
=BG= call an action from a template, add a stub action to the controller that ember expects to find it in by default
=BG= implement the action
=BG= refactor to move action implementation to parent controller
=BG= clean up extraneous ember objects
=BG= redirect to another route
=BG= alternate use of setup controller
=BG= specify sort properties