Make CreateSigningCertificate stop requiring user

Fixes TOOLS-513
Minor help string cleanup
Fix describe/snapshotattribute backporting
Update man pages
Merge branch '3.0-maint'

Conflicts:
	man/euare-accountaliascreate.1
	man/euare-accountaliasdelete.1
	man/euare-accountaliaslist.1
	man/euare-accountcreate.1
	man/euare-accountdel.1
	man/euare-accountdelpolicy.1
	man/euare-accountgetpolicy.1
	man/euare-accountgetsummary.1
	man/euare-accountlist.1
	man/euare-accountlistpolicies.1
	man/euare-accountuploadpolicy.1
	man/euare-getldapsyncstatus.1
	man/euare-groupaddpolicy.1
	man/euare-groupadduser.1
	man/euare-groupcreate.1
	man/euare-groupdel.1
	man/euare-groupdelpolicy.1
	man/euare-groupgetpolicy.1
	man/euare-grouplistbypath.1
	man/euare-grouplistpolicies.1
	man/euare-grouplistusers.1
	man/euare-groupmod.1
	man/euare-groupremoveuser.1
	man/euare-groupuploadpolicy.1
	man/euare-servercertdel.1
	man/euare-servercertgetattributes.1
	man/euare-servercertlistbypath.1
	man/euare-servercertmod.1
	man/euare-servercertupload.1
	man/euare-useraddcert.1
	man/euare-useraddkey.1
	man/euare-useraddloginprofile.1
	man/euare-useraddpolicy.1
	man/euare-usercreate.1
	man/euare-usercreatecert.1
	man/euare-userdeactivatemfadevice.1
	man/euare-userdel.1
	man/euare-userdelcert.1
	man/euare-userdelkey.1
	man/euare-userdelloginprofile.1
	man/euare-userdelpolicy.1
	man/euare-userenablemfadevice.1
	man/euare-usergetattributes.1
	man/euare-usergetinfo.1
	man/euare-usergetloginprofile.1
	man/euare-usergetpolicy.1
	man/euare-userlistbypath.1
	man/euare-userlistcerts.1
	man/euare-userlistgroups.1
	man/euare-userlistkeys.1
	man/euare-userlistmfadevices.1
	man/euare-userlistpolicies.1
	man/euare-usermod.1
	man/euare-usermodcert.1
	man/euare-usermodkey.1
	man/euare-usermodloginprofile.1
	man/euare-userresyncmfadevice.1
	man/euare-userupdateinfo.1
	man/euare-useruploadpolicy.1
	man/euca-allocate-address.1
	man/euca-associate-address.1
	man/euca-attach-volume.1
	man/euca-authorize.1
	man/euca-bundle-image.1
	man/euca-bundle-instance.1
	man/euca-bundle-upload.1
	man/euca-bundle-vol.1
	man/euca-cancel-bundle-task.1
	man/euca-check-bucket.1
	man/euca-confirm-product-instance.1
	man/euca-copy-image.1
	man/euca-create-group.1
	man/euca-create-image.1
	man/euca-create-keypair.1
	man/euca-create-snapshot.1
	man/euca-create-tags.1
	man/euca-create-volume.1
	man/euca-delete-bundle.1
	man/euca-delete-group.1
	man/euca-delete-keypair.1
	man/euca-delete-snapshot.1
	man/euca-delete-tags.1
	man/euca-delete-volume.1
	man/euca-deregister.1
	man/euca-describe-addresses.1
	man/euca-describe-availability-zones.1
	man/euca-describe-bundle-tasks.1
	man/euca-describe-group.1
	man/euca-describe-image-attribute.1
	man/euca-describe-images.1
	man/euca-describe-instance-attribute.1
	man/euca-describe-instance-types.1
	man/euca-describe-instances.1
	man/euca-describe-keypairs.1
	man/euca-describe-regions.1
	man/euca-describe-snapshots.1
	man/euca-describe-tags.1
	man/euca-describe-volumes.1
	man/euca-detach-volume.1
	man/euca-disassociate-address.1
	man/euca-download-bundle.1
	man/euca-get-console-output.1
	man/euca-get-password-data.1
	man/euca-get-password.1
	man/euca-import-keypair.1
	man/euca-modify-image-attribute.1
	man/euca-modify-instance-type.1
	man/euca-modify-snapshot-attribute.1
	man/euca-monitor-instances.1
	man/euca-reboot-instances.1
	man/euca-register.1
	man/euca-release-address.1
	man/euca-reset-image-attribute.1
	man/euca-revoke.1
	man/euca-run-instances.1
	man/euca-start-instances.1
	man/euca-stop-instances.1
	man/euca-terminate-instances.1
	man/euca-unbundle.1
	man/euca-unmonitor-instances.1
	man/euca-upload-bundle.1
	man/euca-version.1
	man/eulb-apply-security-groups-to-lb.1
	man/eulb-attach-lb-to-subnets.1
	man/eulb-configure-healthcheck.1
	man/eulb-create-app-cookie-stickiness-policy.1
	man/eulb-create-lb-cookie-stickiness-policy.1
	man/eulb-create-lb-listeners.1
	man/eulb-create-lb-policy.1
	man/eulb-create-lb.1
	man/eulb-delete-lb-listeners.1
	man/eulb-delete-lb-policy.1
	man/eulb-delete-lb.1
	man/eulb-deregister-instances-from-lb.1
	man/eulb-describe-instance-health.1
	man/eulb-describe-lb-policies.1
	man/eulb-describe-lb-policy-types.1
	man/eulb-describe-lbs.1
	man/eulb-detach-lb-from-subnets.1
	man/eulb-disable-zones-for-lb.1
	man/eulb-enable-zones-for-lb.1
	man/eulb-register-instances-with-lb.1
	man/eulb-set-lb-listener-ssl-cert.1
	man/eulb-set-lb-policies-for-backend-server.1
	man/eulb-set-lb-policies-of-listener.1
	man/euscale-create-auto-scaling-group.1
	man/euscale-create-launch-config.1
	man/euscale-create-or-update-tags.1
	man/euscale-delete-auto-scaling-group.1
	man/euscale-delete-launch-config.1
	man/euscale-delete-notification-configuration.1
	man/euscale-delete-policy.1
	man/euscale-delete-scheduled-action.1
	man/euscale-delete-tags.1
	man/euscale-describe-adjustment-types.1
	man/euscale-describe-auto-scaling-groups.1
	man/euscale-describe-auto-scaling-instances.1
	man/euscale-describe-auto-scaling-notification-types.1
	man/euscale-describe-launch-configs.1
	man/euscale-describe-metric-collection-types.1
	man/euscale-describe-notification-configurations.1
	man/euscale-describe-policies.1
	man/euscale-describe-process-types.1
	man/euscale-describe-scaling-activities.1
	man/euscale-describe-scheduled-actions.1
	man/euscale-describe-tags.1
	man/euscale-describe-termination-policy-types.1
	man/euscale-disable-metrics-collection.1
	man/euscale-enable-metrics-collection.1
	man/euscale-execute-policy.1
	man/euscale-put-notification-configuration.1
	man/euscale-put-scaling-policy.1
	man/euscale-put-scheduled-update-group-action.1
	man/euscale-resume-processes.1
	man/euscale-set-desired-capacity.1
	man/euscale-set-instance-health.1
	man/euscale-suspend-processes.1
	man/euscale-terminate-instance-in-auto-scaling-group.1
	man/euscale-update-auto-scaling-group.1
	man/eustore-describe-images.1
	man/eustore-install-image.1
	man/euwatch-delete-alarms.1
	man/euwatch-describe-alarm-history.1
	man/euwatch-describe-alarms-for-metric.1
	man/euwatch-describe-alarms.1
	man/euwatch-disable-alarm-actions.1
	man/euwatch-enable-alarm-actions.1
	man/euwatch-get-stats.1
	man/euwatch-list-metrics.1
	man/euwatch-put-data.1
	man/euwatch-put-metric-alarm.1
	man/euwatch-set-alarm-state.1