* Revert "Add custom bar button item class (#1641)"

This reverts commit 80ae102456.

* Revert "Export `Navigator` class for public use (#1647)"

This reverts commit 1770113321.

* Revert "Hide back button when calling resetTo (#1469)"

This reverts commit 518e372e05.

* Revert "Add isRootLaunched implementation on Android"

This reverts commit 6f4aca32a6.

* Revert "Fixed LightBox not updating overlay width/height on rotate (#1461)"

This reverts commit 54d2531720.

* Fixed LightBox not updating overlay width/height on rotate

* Cleaned up bounds

* Removed unneeded call

This fixes issues with other React Native views which rely on the view controller hierarchy.

* Move logic for tap background to dismiss out of background color view

This allows for tapping the background without setting a color here, meaning this feature can be enabled with one less view in the view hierarchy

* Only allow taps on views that aren't the React view

This allows for taps on any background view, visual effect view, color tint view, etc, but not on the content.

* Added tapBackgroundToDismiss to LightBox screens

* Updated LightBox readme

* Formatting updates

* Fixed ios selector

* Updated animationEnd hide method

fixes #800 #797