Convert internal tests to use json api format for store.push

[igorT]

Everywhere where we do,
store.push(type, data) in tests, we need to convert to store.push(jsonApiFormat)
We can also break this up in multiple PRs and merge to a branch.

[igorT]

Instead of pushing something like

store.push('user', { 
  id:1, 
  name: 'bmac', 
  friends: [1,2,3], 
  links: { 
    other: 'hello' 
  }
})

should now do something like:

store.push({ 
  id:1, 
  type: 'user',
  attributes: {
    name: 'bmac'
  },
  relationships: { 
    friends: {
       data: [{ type: 'location', id:1}, { type: 'location', id:2}, { type: 'location', id:3}]
     },
     other: {
       links: { 
         related: 'hello' 
       }
    }
})

[igorT]

Will need to temporarily comment out Ember.assert('Passing classes to store methods has been removed. Please pass a dasherized string instead of '+ Ember.inspect(modelName), typeof modelName === 'string');

[fivetanley]

Why?

[Serabe]

Sorry, I've been in a plane for most of my weekend. I see @stevenwu has started to tackle the issue. If it is too big for one person and you decide to split it in several, or if @stevenwu needs some help, just let me know.