sangajala- fixed issues with primary key not available in export files
Merge remote-tracking branch 'origin/master'

Conflicts:
	src/main/java/com/voyanta/data/ValidationUtils.java
	src/test/java/com/voyanta/data/ProductProductIdComparator.java
	src/test/java/com/voyanta/data/VXMLUtils.java
sangajala- fixed some issues in export