Update var names to match updated exclusion names

[dchud]

In #59, the exclusion category Exclude-Same-Day-Extraneous was renamed to Exclude-Adult-Extraneous-Same-Day to match the similar exclusion for peds. In code, several vars related to this (e.g. sde_vars, orig_sde, mean_sde, temp_sde) might be best renamed to esd to limit the cognitive load of referring to them with an abbreviation that doesn't match the reordered exclusion name.

Verify whether any additional variables should be renamed as well as a result of renames in #59.