Rename PowerShell host.

Fix Entity Framework NuGet package not installing due to Package Management PowerShell host name not matching Visual Studio's PowerShell host name.

src/AddIns/Misc/PackageManagement/PowerShell/Project/Src/PowerShellHost.cs

@@ -131,7 +131,7 @@ namespace ICSharpCode.PackageManagement.Scripting
 		}
 		
 		public override string Name {
-			get { return "PowerShell Host"; }
+			get { return "Package Manager Host"; }
 		}
 		
 		public override Guid InstanceId {