Fix various Sphinx warnings

Change-Id: I68c9ff6fdf9115d1abb0fb756eb806b92af29286
Replace FLAGS with cfg.CONF in volume

Replace all the FLAGS with cfg.CONF in cinder/volume
Large commit was split into several parts

Change-Id: I435fe91f414fda027531076bdbcb6660a3c635af
Fixes: bug #1182037
Imported Translations from Transifex

Change-Id: I0a33030fb608d564eb0717f5107553254c888e78
Flatten Volume from Snapshot

Implements: blueprint flatten-volume-from-snapshot

Change-Id: I77b0a9bf8cfbe4881a75909d2749d0c3f17561c9
Merge "Fix various Sphinx warnings"
Merge "Replace FLAGS with cfg.CONF in volume"
Merge "Imported Translations from Transifex"
Merge "Flatten Volume from Snapshot"
Raise an error if initiator is not present

Since the compute nodes may not have iSCSI support, volume drivers
requiring it will raise an error if the connector's initiator attribute
is not set when initializing the connection.

bug #1007084

Related to: I5da472e5013fdc0c733ecb12b919c1068873bdc6

Change-Id: I95d859c11cf81bf57cecf7af8b224cdbb71592d5