Fix: Repeated requests to NuGet web service caused by wrong filtering for "SharpDevelopAddIn" tag.

src/AddIns/Misc/AddInManager2/Project/Src/Model/Interfaces/INuGetPackageManager.cs

@@ -17,7 +17,6 @@ namespace ICSharpCode.AddInManager2.Model
 		{
 			get;
 		}
-		bool PackageContainsAddIn(IPackage package);
 		IPackageOperationResolver CreateInstallPackageOperationResolver(bool allowPrereleaseVersions);
 		void ExecuteOperation(PackageOperation operation);
 	}

src/AddIns/Misc/AddInManager2/Project/Src/Model/NuGetPackageManager.cs

@@ -77,11 +77,6 @@ namespace ICSharpCode.AddInManager2.Model
 			}
 		}
 		
-		public bool PackageContainsAddIn(IPackage package)
-		{
-			return (package != null) && (package.Tags != null) && package.Tags.ToLowerInvariant().Contains("sharpdevelopaddin");
-		}
-		
 		public IPackageOperationResolver CreateInstallPackageOperationResolver(bool allowPrereleaseVersions)
 		{
 			EnsurePackageManagerInstance();

src/AddIns/Misc/AddInManager2/Project/Src/ViewModel/AvailableAddInsViewModel.cs

@@ -55,7 +55,6 @@ namespace ICSharpCode.AddInManager2.ViewModel
 		protected override IEnumerable<IPackage> GetFilteredPackagesBeforePagingResults(IQueryable<IPackage> allPackages)
 		{
 			return base.GetFilteredPackagesBeforePagingResults(allPackages)
-				.Where(package => AddInManager.NuGet.PackageContainsAddIn(package))
 				.Where(package => package.IsReleaseVersion())
 				.DistinctLast(PackageEqualityComparer.Id);
 		}

src/AddIns/Misc/AddInManager2/Project/Src/ViewModel/NuGetAddInsViewModelBase.cs

@@ -122,6 +122,7 @@ namespace ICSharpCode.AddInManager2.ViewModel
 			{
 				IQueryable<IPackage> packages = GetAllPackages();
 				packages = OrderPackages(packages);
+				packages = FilterPackagesByStaticFilter(packages);
 				packages = FilterPackagesBySearchCriteria(packages);
 				TotalItems = packages.Count();
 				_allPackages = GetFilteredPackagesBeforePagingResults(packages);
@@ -141,6 +142,12 @@ namespace ICSharpCode.AddInManager2.ViewModel
 			return FilterPackagesBySearchCriteria(packages, searchCriteria);
 		}
 		
+		private IQueryable<IPackage> FilterPackagesByStaticFilter(IQueryable<IPackage> packages)
+		{
+			// Look for "SharpDevelopAddIn" tag to show only SD AddIn packages
+			return packages.Find(new string[] { "Tags" }, "sharpdevelopaddin");
+		}
+		
 		private string GetSearchCriteria()
 		{
 			if (String.IsNullOrWhiteSpace(SearchTerms))