Add DC loss factor checks to PV, PV + battery report template

[mjprilliman]

Pull Request Template

Description

-Add line for DC constant curtailment/availability loss factor
-Add checks for DC hourly/period losses in table row
-Updated for PV, PV + battery templates

Fixes #1588

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)

Checklist:

If you have added a new compute module in a SSC pull request related to this one, be sure to check the Process Requirements.

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules
• I have checked my code and corrected any misspellings

[cpaulgilman]

1. I'm still seeing degradation reported as "none" when the input is 0.5/yr:

2. Description "DC Availability/Curtailment" is too long. Consider using "DC avail./curtail."

3. Unrelated to losses, inverter name shows as "<null>":

[cpaulgilman]

This looks good for report generator. Thanks for fixing.

There is a problem with PV-battery availability losses that I will create a separate issue for.