Fixes #422 by showing a drop-down list for data driven enumerations with 5 items.
#425 - NullPointerException when setting template field values on a new Page
#415 - Error at Parent Category mapping with a category- Unhandled error processing ajax request
#430 - SKUs should be marked as discountable by default
#431 - Product isFeatured should not be required since it has a default value
Merge remote-tracking branch 'origin/BroadleafCommerce-3.0.x' into develop

Conflicts:
	admin/broadleaf-open-admin-platform/src/main/java/org/broadleafcommerce/openadmin/server/service/AdminEntityServiceImpl.java
	admin/broadleaf-open-admin-platform/src/main/java/org/broadleafcommerce/openadmin/server/service/persistence/PersistenceManagerImpl.java