F1 R script comments update

F1_allfigs.R
- updated header comment description of variables
fc: supp- zOR vs. CHR & CFR proxies

acuteILI_wk.sql
- export weekly SDI data for ILI cases in inpatient
and ER service facilities
- will be used to report ratio of inpatient to outpatient
ILI in a plot vs. zOR

Supp_zOR_CFR_CHR.py
- mean retro zOR vs. hospitalization rate per 100,000
in CDC EIP surveillance system by season
- mean retro zOR vs. proportion of all-cause mortality
due to P&I/proportion of all outpatient visits due to ILI
in 122 Cities Mortality Reporting System and ILINet (proxy
for P&I mortality risk or CFR)
- will later add plots for mean retro zOR vs. inpatient
to outpatient ILI ratio from SDI and mean retro zOR vs.
mortality risk to hospitalization rate (or similar)

functions.py
- function to import all_cdc_source_data.csv
- returns dictionaries of hosp. rates and P&I mortality risk