minor changes to rookzelig.R

- added an "if(!production){" clause around the package auto install up top (it causes some grief in prod. environment)
- removed the "production" clause for the location of the subset file; for whatever reason trying to serve the subset file by rApache 
  wasn't working on dataverse-demo, so for now we've moved back to writing the subset directly into the data subdirectory in 
  the TwoRavens own directory.