Added backbone models/collections for focuses, projects, procedures and tickets.
Focuses is set up to attach projects and procedures as ProjectCollection and ProcedureCollection via parse method.
Projects is set up to attach tickets as TicketCollection via initialize method. Initialize here rather than parse b/c parse is called after a fetch, and ProjectCollection is instantiated via Focus calling it rather than a fetch. I'd rather not fetch more than once when we load the app and fetching focuses passes down all projects, procedures and tickets.
Attached Focuses to the App, so all our data is handy. I think this is an effective way of doing things, minimizes fetches. I don't know if it will be problematic at some point. (with a ton of procedures/tickets).