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/Players/PlayerData.cs

@@ -16,7 +16,7 @@ namespace Content.Server.Players
         ///     The session ID of the player owning this data.
         /// </summary>
         [ViewVariables]
-        public NetSessionId SessionId { get; }
+        public NetUserId UserId { get; }
 
         /// <summary>
         ///     The currently occupied mind of the player owning this data.
@@ -31,9 +31,9 @@ namespace Content.Server.Players
             Mind = null;
         }
 
-        public PlayerData(NetSessionId sessionId)
+        public PlayerData(NetUserId userId)
         {
-            SessionId = sessionId;
+            UserId = userId;
         }
     }