aditional test cases for copy and rename
remove unneeded delTree
fix recursive rename for local storage backend
add recursive copy to local storage backend
fix recursive copy and rename for mapped local storage backend
fix recursive copy and rename for common storage backend
fix illegal usage of unlink in test case
use \OC\Files\Filesystem::isIgnoredDir
remove unneeded check
re-use rescursive copy from common storage
Fix LocalStorage->unlink to work on folder as expected
Remove code duplication
Merge pull request #3908 from owncloud/storage-folder-copy-rename

Recursive copy and remove for local storage backends