Add number of disposable diapers purchased to NDBN report

[cielf]

Summary

Add the number of disposable diapers purchased and number of cloth diapers purchased to the NDBN report

Why

NDBN asks for this information from the diaper banks every year

Details

We already calculate the number of disposable diapers purchased. So we can just use that number.
Hopefully there is an analogous way to get the cloth diapers.
That may require a little bit of digging.

Additional note

Confirmed with NDBN-- cloth and disposable should be separate

Criteria for completion

• Annual report shows the number of disposable diapers purchased
• Annual report shows the number of cloth diapers purchased
• Test demonstrating that it does.

Bonus round

The value calculated as "total diapers" is just the number of disposable diapers. Update the variable name throughout to reflect that it's disposables only

[jadekstewart3]

@cielf May I work on this one please?

[dorner]

Go for it!