Feature/replicate by wf

![aem_wcm___assets](https://cloud.githubusercontent.com/assets/1451868/4211979/e2ef5044-3893-11e4-9d0d-9620f2e105ca.png)

Does not have unit tests as it is just Page/Asset/Other detection and updating a MVM
Findbugs doesn't like this line:
[INFO] Nullcheck of resource at line 133 of value previously dereferenced in com.adobe.acs.commons.replication.status.impl.ReplicatedByWorkflowProcess.execute(WorkItem, WorkflowSession, MetaDataMap) ["com.adobe.acs.commons.replication.status.impl.ReplicatedByWorkflowProcess"] At ReplicatedByWorkflowProcess.java:[lines 69-154]