Fix WFE-1007, root folders are created.
Don't throw exceptions when deleting a non-existent file
Don't throw an exception when a resource is not in filesystem DL.
Sort folders before copying them when snapshotting.
Merge branch 'master' into develop

Conflicts:
	src/main/java/pl/psnc/dl/wf4ever/fs/FilesystemDL.java
Brought back the evo service resource, for temporary backwards
compatiblity.