windows now have the ability to hide or not hide markers. via window
attribute isIconVisibleOnClick

- it should be noted that the default of hiding as marker has been
  inverted to default to show a marker.
-linking click on a marker by default, without the need for a window
- this is needed so that a parent controller can get the click event!
Merge pull request #51 from trafficland/feature/optionally_hide_marker_on_window_creation

windows now have the ability to hide or not hide markers. via window