Holy crap auth works (#2099)

* Holy crap auth works

* Fix some usages of UserID instead of UserName

* Refactor preferences.

They be non-async now. Also faster.

* Rename DbContext.

* Guest username assignment.

* Fix saving of profiles.

* Don't store data for guests.

* Fix generating invalid random colors.

* Don't allow dumb garbage for char preferences.

* Bans.

* Lol forgot to fill out the command description.

* Connection log.

* Rename all the tables and columns to be snake_case.

* Re-do migrations.

* Fixing tests and warnings.

* Update submodule

Content.Server/GameTicking/GamePreset.cs

@@ -1,6 +1,7 @@
 using System.Collections.Generic;
 using Content.Shared.Preferences;
 using Robust.Server.Interfaces.Player;
+using Robust.Shared.Network;
 
 namespace Content.Server.GameTicking
 {
@@ -13,6 +14,6 @@ namespace Content.Server.GameTicking
         public virtual string ModeTitle => "Sandbox";
         public virtual string Description => "Secret!";
         public virtual bool DisallowLateJoin => false;
-        public Dictionary<string, HumanoidCharacterProfile> readyProfiles;
+        public Dictionary<NetUserId, HumanoidCharacterProfile> readyProfiles;
     }
 }