Fix colony teams assignment behaviour

[Thodor12]

Changes proposed in this pull request

• Consistently ensure citizens are registered to the correct team
• Use the colony team name instead of a per citizen team
• Ensure that upon deletion of a colony it's respective team is removed
• Fix the colony deletion event not triggering for command based deletion

Testing

• [X] Yes I tested this before submitting it.
• [ ] I also did a multiplayer test.

Review please