Merge into Master

- Help function
- swapped sys.exit() with exceptions
3 jobs for Haller in 30 seconds (queued for 1 second)
Status Job ID Name Coverage
  Docker
passed #1571137
shell
buildDockerMXNet150

00:00:14

passed #1571123
shell
buildDockerMXNet170

00:00:15

failed #1571122
shell
buildDockerMXNet150

00:00:10