Redirect to current page after editing instance

[Liyingjun]

When the instances is paginated in multiple pages, if we edit an instance not in the first page, after successful editting the instance it will redirect to the first page and not to current one..

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/112500

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/112500
Committed: https://git.openstack.org/cgit/openstack/horizon/commit/?id=d5ca48d98511a068c506b820607625f8b137df56
Submitter: Jenkins
Branch: master

commit d5ca48d98511a068c506b820607625f8b137df56
Author: liyingjun <email address hidden>
Date: Wed Aug 6 17:04:40 2014 +0800

    Redirect to the current page after edited instance

    When the instances is paginated in multiple pages, if we edit an
    instance not in the first page, after successful editting the instance
    it will redirect to the first page and not to current one.

    Change-Id: Iacfade81de0e3f5c225e17ec3a34ce7712e4ad6d
    Closes-bug: 1353870