EZP-23437: Added DFS metadata handler
EZP-23437: Added listener to serve binary files
EZP-23437: Changed stream listener priority to 42
EZP-23437: Fixed DFS:getMimeType()
EZP-23437: Updated DFS ConfigFactory after merge
EZP-23437: Registered legacy_dfs_cluster to the extension
EZP-23437: Fixed license headers
EZP-23437: tested LegacyDFSCluster ConfigurationFactory
EZP-23437: fixed exception handing in create
EZP-23437: + instead of array_merge
EZP-23437: phpdoc + misc fixes