Imported Translations from Transifex

Change-Id: Ic3ae662ce418f2548006de27ae22941a31adcb8d
Support timezone in memcached token backend

This patch fixes bug #1221087.

Replaces time.mktime() to calendar.timegm() in utils.unixtime()
to get correct expiration time.

After this patch, Memcached token backend does not depend on timezone.
So remove the section "Memcached and System Time" in configuration manual.

DocImpact

Change-Id: I17233c8a79d01a37abdbd46934ad486ddc8caec9
Merge "Imported Translations from Transifex"
Merge "Support timezone in memcached token backend"
Changes template header for translation catalogs

New translation catalogs will be generated with the organization set to
'OpenStack Foundation' in the header.

Change-Id: I0da323113030c6a68b3c4bbdd94053639312c594
Partial-Bug: #1214176
Changed header from LLC to Foundation based on trademark policies

Fixes: Bug 1214176

Change-Id: Ie937081a53d377671b8b88f422642c8131002f88
Merge "Changed header from LLC to Foundation based on trademark policies"