Can not open deployed cluster page after plugin installation

[Julia Aranovich]

Steps to reproduce in Fuel UI:

1. create environment (default wizard parameters), add some nodes and deploy the environment
2. go to Environments page
3. install some plugin compatible with the environment
4. go to the environment page

Expected result:
the environment page is open and the plugin settings are shown on Settings tab

Actual result: the environment page isn't open, user stays on Environments page. Also there is a JS exception in browser console.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/308903

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/mitaka
Review: https://review.openstack.org/309391

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/308903
Committed: https://git.openstack.org/cgit/openstack/fuel-ui/commit/?id=0174716204af47e1a9e0011e983b9940b6eede63
Submitter: Jenkins
Branch: master

commit 0174716204af47e1a9e0011e983b9940b6eede63
Author: Julia Aranovich <email address hidden>
Date: Thu Apr 21 19:14:09 2016 +0300

    Support installing of new plugins to existing environment

    * hasChanges method of Settings model is fixed to support environment
      plugins which are installed after the environment creation or
      environment deployment

    Closes-Bug: #1572481
    Closes-Bug: #1572906

    Change-Id: If2f69a02537c84270f3699240b1e8c7c4cc7a578

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/309391
Committed: https://git.openstack.org/cgit/openstack/fuel-ui/commit/?id=ecb908c267d38d500d005078050ea792bc60bfd7
Submitter: Jenkins
Branch: stable/mitaka

commit ecb908c267d38d500d005078050ea792bc60bfd7
Author: Julia Aranovich <email address hidden>
Date: Thu Apr 21 19:14:09 2016 +0300

    Support installing of new plugins to existing environment

    * hasChanges method of Settings model is fixed to support environment
      plugins which are installed after the environment creation or
      environment deployment

    Closes-Bug: #1572481
    Closes-Bug: #1572906

    Change-Id: If2f69a02537c84270f3699240b1e8c7c4cc7a578

[ElenaRossokhina (esolomina)]

Verified with 417-mos iso and fuel_plugin_example_v4
cat /etc/fuel_build_id:
 417
cat /etc/fuel_build_number:
 417
cat /etc/fuel_release:
 9.0
cat /etc/fuel_openstack_version:
 mitaka-9.0
rpm -qa | egrep 'fuel|astute|network-checker|nailgun|packetary|shotgun':
 fuel-release-9.0.0-1.mos6347.noarch
 fuel-bootstrap-cli-9.0.0-1.mos284.noarch
 fuel-migrate-9.0.0-1.mos8398.noarch
 fuel-mirror-9.0.0-1.mos137.noarch
 fuel-notify-9.0.0-1.mos8398.noarch
 nailgun-mcagents-9.0.0-1.mos746.noarch
 python-fuelclient-9.0.0-1.mos316.noarch
 fuelmenu-9.0.0-1.mos270.noarch
 fuel-9.0.0-1.mos6347.noarch
 fuel-utils-9.0.0-1.mos8398.noarch
 fuel-setup-9.0.0-1.mos6347.noarch
 fuel-library9.0-9.0.0-1.mos8398.noarch
 shotgun-9.0.0-1.mos90.noarch
 fuel-agent-9.0.0-1.mos284.noarch
 fuel-ui-9.0.0-1.mos2706.noarch
 fuel-ostf-9.0.0-1.mos934.noarch
 fuel-misc-9.0.0-1.mos8398.noarch
 python-packetary-9.0.0-1.mos137.noarch
 fuel-nailgun-9.0.0-1.mos8709.noarch
 rubygem-astute-9.0.0-1.mos746.noarch
 fuel-provisioning-scripts-9.0.0-1.mos8709.noarch
 network-checker-9.0.0-1.mos72.x86_64
 fuel-openstack-metadata-9.0.0-1.mos8709.noarch