Updating IContext to our current style and making it less reliant on macros.

Updating code that uses IContext to a more conformant pattern of usage.

tests/blackcore/testnetmediators.h

@@ -45,6 +45,7 @@ namespace BlackCoreTest
         void cleanupTestCase();
 
     private:
+        BlackMisc::CApplicationContext m_context;
         BlackCore::NetworkDummy m_networkDummy;
     };