10-Jul TG
Uploaded some changes.
1) Now loading Horses' Birth Dates from the horse pages.
   Doing this as a separate process after having loaded all the race results.
2) Changed that handy db rebuilding functionality, it now runs the SQL in the
   .sql files and the function def is in the race_data_pgsql.py file
3) Added some auditing functionality with error logging and audit logging
4) Added a star schema to the database, will have some sql to populate it from
   the staging data shortly. Should make reporting on the data easier.

So you should be able to run the historical load as-is and it'll rebuild the database
and then load from racenet. It'll take a few days to finish loading as getting
the individual horse detail pages takes a while - there's 100000 pages to get.