feat(ionNavBar,ionHeaderBar): use declarative syntax

[ajoslin]

Closes #777
Closes #596
Closes #477

New Documentation:

• Footer
• Header
• NavBar
• NavBackButton
• NavButtons

Also: test count up to 324 :-)

[ajoslin]

There's a lot here to read.

The only code that really needs review, however, is these:

• All the new code in: https://github.com/driftyco/ionic/blob/navbar-declarative/js/ext/angular/src/directive/ionicNavBar.js
• The marked lines here: https://github.com/driftyco/ionic/blob/navbar-declarative/js/ext/angular/src/directive/ionicViewState.js#L36-L73

[ajoslin]

Landed via bfcfae3

[rvanbaalen]

@ajoslin Ok, nice.. but this is quite the breaking change you introduced here. Any comments on how to transition from the old code to this?

For example, I now have $scope.leftButtons defined in my controllers to generate left buttons in my header. But that doesn't seem to work anymore?

[ajoslin]

We will be pushing out a new release with this hopefully early in this coming week, with a migration guide and detailed documentation. Until then, the nightly branch is in a state of serious flux.

For now, check this out: http://ajoslin.github.io/docs/nightly/api/directive/ionNavBar/

Even that doc page is in a state of huge flux until the release, though.