store all resource maps together.
Identify folder entries.
Save user name
Delete resources.
get RO as zip.
Update resources
Get all ROs.
Merge remote-tracking branch 'wf4ever/develop' into develop

Conflicts:
	src/main/java/pl/psnc/dl/wf4ever/rosrs/ResearchObjectListResource.java
	src/main/java/pl/psnc/dl/wf4ever/rosrs/ResearchObjectResource.java
Merge remote-tracking branch 'wf4ever/develop' into develop

Conflicts:
	src/main/java/pl/psnc/dl/wf4ever/common/Builder.java
	src/main/java/pl/psnc/dl/wf4ever/model/AO/Annotation.java
	src/main/java/pl/psnc/dl/wf4ever/model/RO/Manifest.java
	src/main/java/pl/psnc/dl/wf4ever/model/RO/ResearchObject.java
	src/main/java/pl/psnc/dl/wf4ever/rosrs/ROSRService.java
	src/main/java/pl/psnc/dl/wf4ever/rosrs/Resource.java
Fix saving the creator.
Fix the extract queries - add the FOAF namespace.
Save evo_info dcterms:created property so that all aggregate resources
have it.
Fix the resource serialization bug when deleting the graph.
Modify the resource resolution order.
Fix the RDF file test, PUT to update should return 200 OK.
Don't delete the proxy if none.
Fix the folders test - save the RO URI in the folder resource map.
Fix concurrent modification when deleting resources.
Fix a problem with multiple attempts to delete the same resource.
Fix a duplicate resource creation.