Add logging to srdns and stoneridge_server
Add logging for master cronjobs
FEWER PARENTHESES
Merge branch 'daemon_logging'

This adds more logging to the daemons on the master and clients, as well as
to the cron jobs that run on the master.
Log installdmg.sh output in the right log file
Fix missing import
Make uploaded files world-readable
Add requirements file for easy installation