Updating manual
Updating manual

(cherry picked from commit 941e0328cad6a1a2c0564bc42fbbd44495f3d056)

uroni/urbackup_backend,uroni/urbackup_backend,uroni/urbackup_backend,uroni/urbackup_backend,uroni/urbackup_backend,uroni/urbackup_backend,uroni/urbackup_backend