HEXTERMINATE - build 8 update

Thanks for the community, I've been able to track down two separate progression issues which were preventing players from advancing in the campaign.

• Ships belonging to the neutral faction have been recoloured, so it is easier to differentiate them against the player's ships.
  
  

• Fixed a campaign blocker where the Marauder campaign would spawn an invalid invasion,
  
• Fixed a separate campaign blocker if the player killed the Pirate flagship before a certain stage.
  
• Invasions in the galaxy map now appear with the correct dark blue colour, so they can be distinguished from normal events.