Jump to home page after updating image info

[Eric Xie]

Description
===========
On dashboard, there are some pages for image list.
When i modified some image's info with ``Edit image`` in non-home page,
always jumped to the home page. But ``delete image`` not.

Steps to reproduce
==================
* On non-home page, ``Edit image``.

Expected result
===============
Stay the image location page.

Actual result
=============
Jump to the home page.

Environment
===========
1. horizon version
# rpm -qa | grep horizon
python-django-horizon-9.0.1-1.el7.noarch

2. httpd version
# rpm -qa | grep httpd
httpd-2.4.6-40.el7.centos.4.x86_64
httpd-tools-2.4.6-40.el7.centos.4.x86_64

[Gary W. Smith (gary-w-smith)]

Unable to reproduce this in Pike.