Add another management property to hold a hash of the node's dependent
subtree data.
Update Guava
Add a way to hash the data of a bundle and its children in a recursive
manner.

Also add a unit test, mostly unimplemented.
General cleanup. Put test classes in idiomatic places and remove
pointless and distracting interfaces which aren't actually used.
Small cleanup
Move test to mirror main class hierarchy and reinstate erroneously non-tested tests
Move more tests to better places.
More test refactoring.

 - Extracted a GraphBaseTest which just initializes a graph and the
   manager but doesn't load any test data.
 - Added an as-yet incomplete unit test for the AclManager
Set a proper name for the admin group
Move admin group name to Group class and fix tests
Tweaks to repository import properties
Make geogarea map to geoculturalContext, as per Isdiah->EAG docs
Use Guava to join multivalue node, and use double line-break as the separator
Correct and clean up test
find the authorized name for an eac import
Update test EAG and add a hack to get repository priority value (ehri specific)
Add a toString to the bundle
Merge remote-tracking branch

Conflicts:
	ehri-importers/src/main/java/eu/ehri/project/importers/EagImporter.java
importing the camps as concepts, fixing the broader relations