Support for Tertiary Menus

[designerbrent]

This ticket is to add in support for the tertiary menu pattern being added in adventistchurch/alps#399.

[davideleuterius]

@designerbrent
I have this coded out now. @kelscahill is working on the front end presentation for this one.

[designerbrent]

@davideleuterius I just committed adventistchurch/alps#399 so this is now ready to go. 👍

[designerbrent]

Please add this in a separate PR then #356.

[davideleuterius]

@designerbrent
I am back today after some long-scheduled time off. Just so that I understand you properly, you want me to add the code for this as a completely separate pull request, but also include it in with branch v3.310-carbon-fields?

[designerbrent]

@davideleuterius Since this work is separate from #310 and doesn't reference piklist, I would prefer to review it separately from that work. Obviously it will merge in the the v3 branch, either before #356 or after but it makes it easier to evaluate and test if it is isolated.

[kelscahill]

@davideleuterius is there a PR for this? I am looking into issue #363, but am wondering if the tertiary menu code was even merged yet.

cc @designerbrent

[davideleuterius]

@kelscahill I will get this done shortly and let you know when this is ready.

cc @designerbrent

[davideleuterius]

@kelscahill @designerbrent
Looks like I put this in a new template in PR 356 some time ago, but it is in a completely separate and new template ( views/patterns/01-molecules/navigation/primary-navigation-tertiary.blade.php ). This isn't being called on anywhere yet, so what I will do is create a new branch, integrate that code into the primary-navigation-blade.php and add a pull request for that.

[davideleuterius]

@kelscahill @designerbrent
I've created a new pull request for this: PR #364

[kelscahill]

@designerbrent PR is merged and this is good for testing.