OC-2896: Move execution of CreateShareOperation to OperationsService
OC-2895: Move execution of UnshareOperation to OperationsService
Merge branch 'share_link__unshare_file' into share_link__unshare_file__share_in_operation_service
Merge pull request #398 from owncloud/share_link__unshare_file__share_in_operation_service

Share link  unshare file  share in operation service