Database propertiy and default entity manager#19

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pnmtjonahen wants to merge 5 commits intokumuluz:masterfrom pnmtjonahen:master

+106-26

Commits on Dec 16, 2016

Added ENV variable for DATABASE_DRIVER
pnmtjonahen
committed

Commits on Feb 19, 2017

Made default entitymanager en entitymanager factory, changed code to create single entityanager or factory per unit name
pnmtjonahen
committed

Commits on Feb 27, 2017