Make partymodes reload their themes

Move PartyModeIds into Partymodes
Fix bug where wrong text size is used (CalculatedFont is now used)
Fix bug where text of the main table in partymodes is displayed wrong

PartyModes/PartyModeChallengeMedley/CPartyModeChallengeMedley.cs

@@ -163,8 +163,8 @@ namespace VocaluxeLib.PartyModes.ChallengeMedley
         private SData _GameData;
         private EStage _Stage;
 
-        public CPartyModeChallengeMedley(string folder)
-            : base(folder)
+        public CPartyModeChallengeMedley(int id, string folder)
+            : base(id, folder)
         {
             _ScreenSongOptions.Selection.RandomOnly = false;
             _ScreenSongOptions.Selection.PartyMode = true;