Added systemd support as an "instantiated service"
Added documentation for systemd scripts
Merge branch 'systemd' into reorg-sources
Forgot to add launch-tangelo.sh script for systemd setup
Updated test runner to handle non-daemonized Tangelo
Removed commented-out code (placed into issue #366 so it's not lost)
Merge branch 'slimdown-testing' into reorg-sources

All tests now pass