Refactored insight startup code to accommodate on-demand activation.

Also created new event for activation request

src/Insight/Insight.hpp

@@ -61,6 +61,11 @@ namespace Bloom
          */
         void run();
 
+        /**
+         * Opens main window and obtains focus.
+         */
+        void showMainWindow();
+
         /**
          * Shuts down Insight. Called when the user closes the Insight window or a ShutdownApplication event is fired.
          */