refs https://github.com/TryGhost/Team/issues/581
requires https://github.com/TryGhost/Ghost/pull/12932
- added segment option and select to default newsletter recipients setting
- updated segment selector to fetch labels/products and show as options
- updated segment selector and count component to call an action when count changes so we can use it in the email confirmation modal
- removed usage and mapping of older `'none'`, `'all'`, `'free'`, and `'paid'` email recipient filter values
refs https://github.com/TryGhost/Team/issues/496
reqs https://github.com/TryGhost/Ghost/pull/12925
The publish menu was meant to default to matching post visibility but that wasn't working consistently and didn't make sense for sites which don't email every post to their members.
A "Default newsletter recipients" option has been added to the "Email newsletter" settings screen and the publish menu updated to reflect the option. The free/paid toggles in the publish menu have also been swapped out for a multi-select style component that will cater to more complex member segmentation.
