[x] Example Japan: if you choose BP it has no data to display. Make it so that if there are no data, the data source does not appear as an option in the drop down list.
[x] Charts with no data in them: example Guatemala. The country has no gas or coal production (or, therefore, reserves), but graphs display blank. Make the appearance of the chart conditional on there being data to populate it.
Note: this should also apply to individual dense project pages as well as country pages.
Note: this should also apply to individual dense project pages as well as country pages.