Move title specification for settings groups to constructor

Using an abstract property was awkward for this as it is being consumed
in the underlying constructor but could not be dynamically set in time from a
derived class.

osu.Game.Tournament/Screens/Ladder/Components/LadderEditorSettings.cs

@@ -20,8 +20,6 @@ namespace osu.Game.Tournament.Screens.Ladder.Components
     {
         private const int padding = 10;
 
-        protected override string Title => @"ladder";
-
         private SettingsDropdown<TournamentRound> roundDropdown;
         private PlayerCheckbox losersCheckbox;
         private DateTextBox dateTimeBox;
@@ -34,6 +32,11 @@ namespace osu.Game.Tournament.Screens.Ladder.Components
         [Resolved]
         private LadderInfo ladderInfo { get; set; }
 
+        public LadderEditorSettings()
+            : base("ladder")
+        {
+        }
+
         [BackgroundDependencyLoader]
         private void load()
         {