refactor(conversation-list/labels): apply ordering logic to favorites and all labels

[domw30]

What does this do?

• applies ordering logic to favorites and all labels i.e.:

Once >=1 conversation is Favorited, the Favorites list should be the first filter in the label selector. If nothing is favorited it would go back to all.

Can we default 'Favorites' if Favorites List >=1 and then have All second

• replaces 'Favorites' text label with a star icon

Why are we making this change?

• design request

How do I test this?

• run ui as usual and test favorite tagging.
• run tests as usual

Key decisions and Risk Assessment:

Things to consider:

1. How will this affect security?
2. How will this affect performance?
3. Does this change any APIs?

fav.mov