Update the staging zone system

[AndreasBrostrom]

• Update staging system to use CBA Events for creation of zones.
• Allow move and removal of zones. (Convert from marker to zeus zone marker if marker is used. so zone can be moved around)
  • This will allow for more mid mission manipulation.
• Allow manipulate sigular soldiers whitelists and gear selections via zen.
  • SETVAR(player,EGVAR(Staging,Zone),_rank);
• Change so gear selections can be globaly manipulated via zen
• Fix spelling for EGVAR(mission,stagingZonesEnabled) to EGVAR(Mission,StagingZonesEnabled)