Introduce new workflow states for models that are not versioned to be able tell when a publish action is the first one

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 6.1.0 CE GA1, 6.1.10 EE GA1, 6.2.0 CE M2
• Fix Version/s: 6.1.20 EE GA2, --Sprint 11/12, 6.2.0 CE M2
• Component/s: Blogs, Collaboration, Legacy > Workflow Portlets, Message Boards
• Labels: None
• Branch Version/s:
  6.1.x
• Backported to Branch:
  Committed
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/4386

There are several cases where we would need the information whether an entity (blog entry or message boards post) has just been created (i.e. added) or just updated. To solve this, we need two draft states, one that can be used before the entity is first published and a second when we're putting the entity back to draft from an already published state.

Entities with a display date in the future will need two additional states to mark a future add or a future update. These states are between the draft states and the publish state. In this case, the background process checking for future display dates will change the state to published when the time comes.