187887752 date format improvements, attribute refinements

[bacalj]

This makes some adjustments to address date formatting issues evident in work originating in PT-187887752. It also contains fixes that address PT-187887752 and PT-188074070 and PT-188092756 and PT-188045605

1. The project team would like dates visible as YYYY/MM/DD
2. The project team would like clock times expressed as "decimal hours", e.g. 1:15PM = 13.25

Changes:

• formulas are added for sunrise and sunset, and internal sunrise and sunset dates are hidden, but used in formula
• constants added for time format for clarity of purpose and iteration/testing in dev
• update of attribute visibility is now synchronous (async was resulting in unresolved promise pile up - did not try Promise.all, because timing is working fine for this feature) - this change was made because attributes were re-calculating/rendering during interaction with tokens
• we now assert cases exist when testing for a delete event (unrelated to above)
• we get times into utc earlier in calculation so we don't get one-off offsets on DLS changeover days in places that don't use DST
• we add an optional transformation to "spring forward" outliers (we can set the flag according to project team decision)
• commenting out of stubbed items to reduce warning noise
• we set a floor of 0 for solar intensity (which may need to be reflected in sim)
• we make rows that occur in polar night or midnight sun changeovers display a logical day length

[bacalj]

If we end up using formulas for the date display column we will not need these, these are mostly here for making iteration easier.

[kswenson]

👍 LGTM -- just a couple of minor comments/suggestions.