File Import Batch job in support of rsync

[djbrooke]

Version support will come in a later iteration.

[pdurbin]

During the 2016-09-08 SBGrid Sprint Planning meeting ( https://docs.google.com/document/d/1wWSdKUOGA1L7UqFsgF3aOs8_9uyjnVpsPAxk7FObOOI/edit ) this issue was given an effort level of "5". The code has already been written and can be found at https://github.com/bmckinney/dataverse-canonical/tree/dcm-beta/src/main/java/edu/harvard/iq/dataverse/batch

As @djbrooke mentioned in the description, this issue does NOT cover support for file versioning when importing files. For now it's more about review of the code mentioned above so I'm assigning it this issue to myself and @scolapasta to at least get the code executing on our laptops so we can play around with it and get a deeper understanding of how it works.

[pdurbin]

@bmckinney @djbrooke and I discussed this issue. I indicated that I plan to get on this branch and play around with import code, executing the unit tests at least and what not.

@bmckinney will be scheduling a meeting with @landreev and ideally myself and @scolapasta to spent 10 or so minutes discussing the code and leaving plenty of time to discuss the implications.