Clean up hooks

[job13er]

We should take a pass through all our components and make sure we're following best practices w.r.t. ember-hook.

• Using hookPrefix and concat helper whenever setting hook on a sub-component or DOM element in our templates.
• Using camelCase for what we concat onto our own hookPrefix, leaving - for nesting.
• Using hookQualifiers when appropriate vs. adding text to hook
• Ensuring that all elements that have a hook are uniquely accessible, either purely through their hook or through a combination of hook and hookQualifiers