fixed status bar not restoring to its original state on closing the imag...

...e

In my project, after closing the image, status bar style was not restored to its original state. I have added a property to MHFacebookImageViewerCell to hold the original status of the status bar. The cell sets this style back to the status bar, when it closes and shows the status bar again.

This issue is not visible in the demo app of the project.