Nov 2023 data update

[derekeder]

• Updates 3 data sources from Sept and Nov - we now count 1,823MW of solar in Illinois (+200MW since May)
• filtering the raw EIA data for Illinois Solar
• generating about page table data from source
• generating pivot table for cumulaitve sum of kw installed by category
• moved python helper functions into data/v2/scripts/aggregate_utils.py
• moved about page javascript into js/about.js
• using Highcharts instead of screenshots to show pie and time series charts
• small text fixes