removed sftp blobstore and started creating the ArchiveService
added retrieve from archive method impl
finished Filesystem ArchiveService impl
added controller and refactored services
added archive test
fixed archiving on FileSystem
fixed fs-it/performance-it properties
added Controller for archive and fixed the FileSystemArchiveService to pass all tests
implemented sftp archive service and added tests
removed archive dir
added index for archives and correpsonding service
Merge pull request #8 from escidoc-ng/archive-service

merged to implement Archive feature