Refactored index.html to add new functionality: - added share button, - added bookmark dialog,  - added sortable layer list, - added Settings tab, - removed Home tab, - added Info tab, - default Output/Info tab to collapsed, - fixed spelling of WorldWind.
Refactored index.html to add new functionality:
- added share button,
- added bookmark dialog, 
- added sortable layer list,
- added Settings tab,
- removed Home tab,
- added Info tab,
- default Output/Info tab to collapsed,
- fixed spelling of WorldWind.
emxsys/WorldWindExplorer,emxsys/WorldWindExplorer