When merged this pull request will:

• Support editing all area markers (not just those created through the module or context menu action)
  • Uses the marker mission events to track markers and automatically create editable icons for them when they are area markers
  • Handles 3DEN placed and scripted markers
  • Markers can be blacklisted using the array (used by cover_map currently)
• Use an event based approach for the icon visibility instead of PFH
  • A lot of edge cases but could not get it to break
  • Probably minor performance improvement
• Hide icons when the the interface is hidden (screenshot mode)
• Use HashMaps instead of CBA namespaces