* MainNavigationController.cs:
  Initial commit.
Wrapped DebugViewController in a NavigationController so that it'd
  show a title and not be visibly under the status bar.

* AppDelegate.cs:
  Changed to use MainNavigationController instead of
  DebugViewController as the RootWindowController.

* DebugViewController.cs:
  Changed the code structure to be easier to add to.
Added new elements.

* iDiagnosticator.csproj:
  Changes.