Import tax impact analysis fields

[inghamn]

The public data portal has a copy of the waivers data from 2021 that includes the net and gross change in taxes for each property. However, the public dataset has not been updated in years, while the master copy of the data in this application has continued to evolve.

We should merge the numbers from the old public dataset into this waivers application. There are two fields we are interested in: "Gross Tax Change" and "Net Tax Change". We'll need to try to match up the old property data with this database.

[jhvhs-bloom]

#c8766cb

Tax table added.

waiver_num, parcel_pin, gross_tax_change and net_tax_change successfully imported from socrata dataset.