refs https://github.com/TryGhost/Team/issues/947
- With email-only posts there's a new "send" status that deserved it's own publishing action in the post publish menu. With with addition the post ended up having few more publishing states: publish, send, and publish&send. In addition to all this there's a "schedule" option. An addition of the "send" only select option there became a need to persist the "email_only" flag when the option was changed in the publish menu. Such persistance was not done before from the publishing menu and led a whole chain of additional methods being passed down from publishmenu component all the way down to distribution-action-select component
- At this moment only a happy path work properly when selecting one of the publishing options and publishing. More states will need to be handled for scheduled, unblished, etc. states of the post
refs https://github.com/TryGhost/Team/issues/947
- Added a "distribution" dropdown component to the post publish menu allowing to select from one of three available types of distribution: publish, poblush&send, and send
