Update Directories and add source data prep files

01: Output dataset to a trial folder and draw from newly created source
data folders (replace 20130725 with 20131203)
03: Make episode dates consistent with HCV (replace 20120703 with
20131203)
06: Correct archive library call typo (replace 20130725 with 20131204)
07: Set episode date to missing if it is implausible (replace 20120517
with 20131204)
Add in files to prep the source data  (morb and sf)