-Added hour:minute:second to the backup so it doesn't get overwritten if you install on the same day
-Added awips2-qpid-lib to the list of rpms to remove since sometimes it doesn't get removed by default
-When checking if CAVE is installed during the EDEX removal, kill all CAVE processes and remove /home/awips/caveData
-Removed option for rhel6 repo
-Always download the lateset awips2.repo file from webserver
-If awips2.repo exists locally, back it up to awips2.repo-YYYYMMDD-hh:mm:ss
I added a few new functions that checks to see if CAVE or EDEX are installed currently, and if they are to remove them.
If EDEX is installed, I backup the following files/directories:
-/awips2/database/data/pg_hba.conf
-/awips2/edex/bin/setup.env
-/awips2/edex/data/utility
-/awips2/ldm
-/awips2/edex/conf
