Node network group dialogs work improperly on Networks tab

[Julia Aranovich]

The issue includes 2 problems:

1. create default env and click Add New Node Network Group button on Networks tab. Type in some name and click Add Group button. Actual result: there are 2 POST requests sent to backend with the same data to create a group. It should be 1 POST request only.

2. click Delete icon of some node network group and click Cancel in the node network group deletion dialog. There will be an error pop-up on UI, but no requests were sent. Expected result: the dialog should be just closed without any requests.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/262175

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/8.0
Review: https://review.openstack.org/262280

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/262175
Committed: https://git.openstack.org/cgit/openstack/fuel-web/commit/?id=92434c85eddde070adf4d76f07c3df7c09b746a1
Submitter: Jenkins
Branch: master

commit 92434c85eddde070adf4d76f07c3df7c09b746a1
Author: Julia Aranovich <email address hidden>
Date: Mon Dec 28 17:28:39 2015 +0300

    Fix node network group dialogs on Networks tab

    Closes-Bug: #1529616

    Change-Id: Icd87f2423e59ec8cf5e5cac7304b570b82a72320

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/262280
Committed: https://git.openstack.org/cgit/openstack/fuel-web/commit/?id=c1c8df0419cc0d684621ac9f0d6bc1af211ddf98
Submitter: Jenkins
Branch: stable/8.0

commit c1c8df0419cc0d684621ac9f0d6bc1af211ddf98
Author: Julia Aranovich <email address hidden>
Date: Mon Dec 28 17:28:39 2015 +0300

    Fix node network group dialogs on Networks tab

    Closes-Bug: #1529616

    Change-Id: Icd87f2423e59ec8cf5e5cac7304b570b82a72320

[Anastasia Palkina (apalkina)]

Verified on ISO #417

VERSION:
  feature_groups:
    - mirantis
  production: "docker"
  release: "8.0"
  api: "1.0"
  build_number: "417"
  build_id: "417"
  fuel-nailgun_sha: "9ebbaa0473effafa5adee40270da96acf9c7d58a"
  python-fuelclient_sha: "4f234669cfe88a9406f4e438b1e1f74f1ef484a5"
  fuel-agent_sha: "df16d41cd7a9445cf82ad9fd8f0d53824711fcd8"
  fuel-nailgun-agent_sha: "92ebd5ade6fab60897761bfa084aefc320bff246"
  astute_sha: "c7ca63a49216744e0bfdfff5cb527556aad2e2a5"
  fuel-library_sha: "7ef751bdc0e4601310e85b8bf713a62ed4aee305"
  fuel-ostf_sha: "214e794835acc7aa0c1c5de936e93696a90bb57a"
  fuel-mirror_sha: "b62f3cce5321fd570c6589bc2684eab994c3f3f2"
  fuelmenu_sha: "2a0def56276f0fc30fd949605eeefc43e5d7cc6c"
  shotgun_sha: "63645dea384a37dde5c01d4f8905566978e5d906"
  network-checker_sha: "9f0ba4577915ce1e77f5dc9c639a5ef66ca45896"
  fuel-upgrade_sha: "616a7490ec7199f69759e97e42f9b97dfc87e85b"
  fuelmain_sha: "cfeadd34d8d048deeabf0884931708b1d040b8a6"