scope all model and collection functions by default

that way we can change

this

``` js
checkAgain = DOM.button
      className: 'pure-button pure-button-primary check-again'
      onClick: => @collection.fetch()
, 'Check again'
```

to this

``` js
checkAgain = DOM.button
      className: 'pure-button pure-button-primary check-again'
      onClick: @collection.fetch
, 'Check again'
```
