added persistence extension test
added test with arquillian persistence extension
Merge remote-tracking branch 'origin/master'

Conflicts:
	jpa-one-to-many-bidirectional/pom.xml
	jpa-one-to-many-bidirectional/src/test/resources/arquillian.xml
	jpa-one-to-many-bidirectional/src/test/resources/test-persistence.xml