Strange/empty graphs for quarters out of compliance in cell #5

[Frijol]

Notebook: https://colab.research.google.com/github/edgi-govdata-archiving/ECHO-Cross-Program/blob/main/ECHO-Cross-Programs.ipynb#scrollTo=tGG4dLXuaRLN

Empty graphs for CAA and RCRA are confusing. The top one shows two violators, but there are no quarters in violation. The second graph gives no violators and has no title (I assume it's RCRA?)

It would be better to just not show the graph if there are no quarters out of compliance.

To reproduce:

Set Zip Code 98103 and run cell 5 to chart violators.

To close:

Only display graphs in this cell for categories of regulation that have violators. Otherwise, print that there are no violators for the region in that category.

[ericnost]

Looks like this issue has been fixed! 🎉