Support start and stop commands for Workbench

[pvanheus]

The command to start the Workbench is:

docker-compose -f docker-compose.yml -f docker-compose.singularity.yml -f docker-compose.irida.yml -f docker-compose.irida_ssl.yml up -d

and to stop it is:

docker-compose -f docker-compose.yml -f docker-compose.singularity.yml -f docker-compose.irida.yml -f docker-compose.irida_ssl.yml down

Both of these commands create a small amount of output that should be displayed to the user.

[zipho]

#11