[Draft] MessageStack

An API for messages:

• plugins can send messages of all 4 defined stages (info, warning, critical, success) with defind action buttons
• a message presentation plugin can render the message to best fit in the hosts messaging system and thus provide a constant UI. Following examples could be implemented:
  • alert messages
  • in place message (close to the editable?)
  • hint bubble style messages
  • growl style messages