When cloning, the clone's collections should be set to null if the source's collections are null.
Merge remote-tracking branch 'origin/devel' into devel

Conflicts:
	src/main/java/org/jboss/pressgang/ccms/rest/v1/entities/RESTTagV1.java
	src/main/java/org/jboss/pressgang/ccms/rest/v1/entities/RESTTopicV1.java
	src/main/java/org/jboss/pressgang/ccms/rest/v1/entities/base/RESTBaseEntityWithPropertiesV1.java
	src/main/java/org/jboss/pressgang/ccms/rest/v1/entities/base/RESTBaseTagV1.java
	src/main/java/org/jboss/pressgang/ccms/rest/v1/entities/base/RESTBaseTopicV1.java