… JSON RPC service class in instantiated in the Global.asax.cs Init() method where it can be called several times.

…instantiate Json Rpc services

…build error)

…g tests in Visual Studio

…en instantiating the same service more than once. Add TestServer_AspNet to demonstrate that Global.Init() is called several times and instantiating a service there can cause the error. Suggested fix is commented out. Add NUnit3TestAdapter to allow running test from Visual Studio.

…tantiating the same service more than once.

…same name.

…bjects where properties only differ by position. Revert "Fix tests failing due to miss-formatted expected results" commit 94b8aa1. Add ThrowArgumentException_WhenInstantiatingAServiceMoreThanOnce() test.