OPAL-1846: Changed default schedule type to Manually (not_scheduled)
OPAL-1846: Changed default schedule type tests
OPAL-1846: Schedule view as manually but keep schedule of new table as MINUTES_15.
Merge pull request #196 from emorency/feature/OPAL-1846-schedule-manually

OPAL-1846: schedule manually
Removed key argument.
Merge branch 'master' of https://github.com/obiba/opal
export commands returns job description in json.