Exclude security group related quotas when the extension disabled

When using neutron as network service and security group extension
disabled, the quotas update workflow will hit some error, because
'security_group' and 'security_group_rule' are passed to the quotas
update method for neutron.
This patch fixes the problem by excluding these two quotas when
neutron security group extension is disabled.

Change-Id: I0011e1c0956d3248b748f109d5ab5e93ec55f7d3
Closes-bug: 1330632
Make security rules with All translatable

The security rule names that include the word "All" should be
translatable.  I've included a SECURITY_GROUP_RULES value with
the 3 translatable rules from local_settings.py.example so that
we will actually have translations for those values.

Change-Id: Id21ac0e6ea328ab18f35f7711de356015db5f50a
Closes-bug: #1334031
Check neutron agent extension support in Info page

Some neutron plugin don't support agent extension, and
Horizon show 404 error on admin info page.
In this commit, we are going to add check if agent
extension supported or not.
Closes-bug: 1331032

Change-Id: I5cd3ec747c650fc2b826d55f39be618eca1b7caa
Imported Translations from Transifex

Change-Id: I074c49b988b159382f946e781853df050da5d1d7
Merge "Exclude security group related quotas when the extension disabled"
Merge "Imported Translations from Transifex"
Merge "Check neutron agent extension support in Info page"
Merge "Make security rules with All translatable"