Sort playertab by username (#7067)

Content.Client/Administration/UI/Tabs/PlayerTab/PlayerTab.xaml.cs

@@ -57,8 +57,12 @@ namespace Content.Client.Administration.UI.Tabs.PlayerTab
                 true));
             PlayerList.AddChild(new HSeparator());
 
+            // Temporary until we can sort by <whatever>
+            var sortedPlayers = new List<PlayerInfo>(players);
+            sortedPlayers.Sort((x, y) => string.Compare(x.Username, y.Username, StringComparison.Ordinal));
+
             var useAltColor = false;
-            foreach (var player in players)
+            foreach (var player in sortedPlayers)
             {
                 var entry = new PlayerTabEntry(player.Username,
                     player.CharacterName,