Chef deploy for job server

-Reverting to spark 0.9.1
-Build debian package for spark-jobserver.jar.  This gets used by the chef recipes for deployment

Not sure if spark 0.9.1 is the right version, or if it's 0.9.3
On second thought I'm just going to remove the email part of this string.  It seems really clunky to add an environment variable for something that does not affect the operation of the service itself.