Switch to a root level action init() function

[jdh2550]

Todo & user are initialized via oncreate (which doesn't work reliably - I don't know why). Even if I could get that working properly I think this is better:

https://zaceno.github.io/hypercraft/post/initialization/

Note that for secure calls do something like this:

  init: () => (state, actions) => {
    actions.user.init().then((result)=>{
      if (result.success) {
        actions.todos.init()
      }
    })
    location.subscribe(actions.location)
  }

Or better still add some sort of "authenticatedInit()" convention?