changed: rewrote submission queue submission logic to fix #501 [squashed multiple commits from branch 2.5.6.oc-12]
changed: rewrote submission queue submission logic to fix #501 [squashed multiple commits from branch 2.5.6.oc-12]

OpenClinica/enketo-express-oc,OpenClinica/enketo-express-oc,OpenClinica/enketo-express-oc