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
good catch - originally all packages were sharded into YYYY/MM/DD buckets; pulled that out so ppl can specify their own.