add scaler
install the scaler requirements
see environment variables
updating start-jobserver
open service port
open gateway port
Merge branch 'master' of github.com:science-automation/scivm-jobserver into feat-deploy-fix

Conflicts:
	jobserver/start-jobserver
Merge pull request #3 from benctamas/feat-deploy-fix

updating exposed ports and start-jobserver script
remove scaler