[FEATURE] Make headshot and team progress unified

[proditis]

Make headshot and team progress unified by a configurable option (ie team_unified_progress).
When this key is set to true, player individual progress will be synced with the team. In practice if player A gets treasures, findings, headshots etc then player b will also appear as having them.

• Add a new team_unified_progress key
• Update frontend claim flag message with something that is relevant to the team progress instead of individual (ie "your team has already claimed this flag")
• Frontend dashboard must display team based activity stream but player profile must include the players individual contributions.
• Frontend headshot must show team progress instead
• VPN scripts must include the team IP's into the findings rules