Add support for new PV and bespoke wind capacity attributes

[mjgleason]

Bug Description
Neither bespoke wind nor new PV supply curves have the standard capacity column any longer. Instead, they have capacity_mw and capacity_mw_ac & capacity_mw_dc, respectively.

This causes the initial "cumulative capacity" chart to show "No data loaded":

To Reproduce
Steps to reproduce the problem behavior

1. Launch reView by running: reView
2. Open http://localhost:8050 in your broswer.
3. Scroll down past the "Options" section.
4. See error

Expected behavior
Initial chart should look more like this:

Screenshots
See above

System (please complete the following information):

• OS: MacOS Monterey
• Compute hardware: MacBook Pro