Codestyle fixes (Codeanalysis)

PartyModes/PartyModeChallengeMedley/PartyModeChallenge.cs

@@ -5,6 +5,7 @@ using System.Text;
 using Vocaluxe.Menu;
 using Vocaluxe.Menu.SongMenu;
 
+[assembly: System.Runtime.InteropServices.ComVisible(false)]
 namespace Vocaluxe.PartyModes
 {
     #region Communication

PartyModes/PartyModeChallengeMedley/PartyModeChallengeMedley.csproj

@@ -47,6 +47,7 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <GenerateSerializationAssemblies>Off</GenerateSerializationAssemblies>
+    <CodeAnalysisRuleSet>..\..\CheckingRules.ruleset</CodeAnalysisRuleSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'ReleaseWin|x64'">
     <PlatformTarget>AnyCPU</PlatformTarget>
@@ -110,6 +111,7 @@
     <Compile Include="ChallengeRounds.cs">
       <CopyToOutputDirectory>Always</CopyToOutputDirectory>
     </Compile>
+    <Compile Include="GlobalSuppressions.cs" />
     <Compile Include="PartyModeChallenge.cs">
       <CopyToOutputDirectory>Always</CopyToOutputDirectory>
     </Compile>