Fix and harmonize title display in the tabs and accordion

[pkozlowski-opensource]

As of today tabs and accordion got the same title attribute but those attributes are interpreted differently:

• in tabs: scope: { title: '@' }
• in accordion: scope:{ title:'=' }

I believe that both directives should use the same syntax and I would vote for @. The problem is that it doesn't work in 1.0.2, we should migrate to 1.0.3 but 1.0.3 might have another regression...

In any case the tabs are broken in 1.0.2 at the moment.

Also, we should consider renaming the title attribute due to: #24

Thoughts?

[ajoslin]

How about we go with manual interpolate and only switch to '@' once it's officially fixed in a stable release?

For now, we can do:

attrs.$observe('title', function(t) { $scope.title = t; });

Then once it works, we can switch without having to change the api on people.

[pkozlowski-opensource]

OK, great, this could do for now. I would like just to try to switch to 1.0.3 to see how it goes and if other regressions are hitting us.

What do you think about the title attribute? Maybe we should rename it to heading or something?

[ajoslin]

How about label?

[pkozlowski-opensource]

Just tested tabs with 1.0.3 and things are OK. So we could use interpolation (@) in both tabs and accordion but it would mean that we require people to use AngularJS 1.0.3+ (or 1.1.1+).