Fix test harness casing and exclude test sources from app

GameList.Tests/ResultsTests.cs

@@ -29,7 +29,7 @@ public class ResultsTests
 
         Assert.True(results.GetArrayLength() >= 1);
         var first = results[0];
-        Assert.Equal("ResultGame", first.GetProperty("Name").GetString());
-        Assert.Equal(8, (int)first.GetProperty("Average").GetDouble());
+        Assert.Equal("ResultGame", first.GetProperty("name").GetString());
+        Assert.Equal(8, (int)first.GetProperty("average").GetDouble());
     }
 }