Increase version of party-mode-system.

Output/PartyModes/Challenge.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <root>
-  <PartyModeSystemVersion>1</PartyModeSystemVersion>
+  <PartyModeSystemVersion>2</PartyModeSystemVersion>
   <Info>
     <Name>TR_PARTYMODE_NAME</Name>
     <Author>brunzel</Author>
@@ -16,4 +16,4 @@
 	<ScreenFile>CPartyScreenChallengeConfig</ScreenFile>
 	<ScreenFile>CPartyScreenChallengeNames</ScreenFile>
   </PartyScreens>
-</root>
+</root>

Output/PartyModes/ChallengeMedley.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <root>
-  <PartyModeSystemVersion>1</PartyModeSystemVersion>
+  <PartyModeSystemVersion>2</PartyModeSystemVersion>
   <Info>
     <Name>TR_PARTYMODE_NAME</Name>
     <Author>brunzel</Author>

Output/PartyModes/TicTacToe.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <root>
-  <PartyModeSystemVersion>1</PartyModeSystemVersion>
+  <PartyModeSystemVersion>2</PartyModeSystemVersion>
   <Info>
     <Name>TR_PARTYMODE_NAME</Name>
     <Author>flokuep</Author>

Vocaluxe/Base/CParty.cs

@@ -31,7 +31,7 @@ namespace Vocaluxe.Base
 {
     static class CParty
     {
-        private const int _PartyModeSystemVersion = 1;
+        private const int _PartyModeSystemVersion = 2;
 
         private static readonly Dictionary<int, SPartyMode> _PartyModes = new Dictionary<int, SPartyMode>();
         private static int _NextID;