Ghost roles create new minds, better tracking of roles at round end screen (#5175)

* Ghost roles now get new Minds

* Some round start/end button stuff

* Mind tracking for better round end reports

* Make traitor kill objectives use mind CharacterName rather than actual occupied entity ("kill brain" prevention)

* Transition over to EntityUid for mind stuff because that's the only way to do it

* BrainSystem fix for PR rebase

Content.Server/Administration/Commands/AGhost.cs

@@ -58,7 +58,7 @@ namespace Content.Server.Administration.Commands
             else
             {
                 ghost.Name = player.Name;
-                mind.TransferTo(ghost);
+                mind.TransferTo(ghost.Uid);
             }
 
             var comp = ghost.GetComponent<GhostComponent>();